Home / 81,480,072.30-122,220,108.45-38,433,351.30

Finding the Fourth Proportional to 81,480,072.30, 122,220,108.45 and 38,433,351.30

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Solution

The fourth proportional to 81,480,072.30, 122,220,108.45 and 38,433,351.30 is: 57,650,026.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,480,072.30 : 122,220,108.45 = 38,433,351.30 : x
  2. Step 2: Convert to fraction form
    81,480,072.30/122,220,108.45 = 38,433,351.30/x
  3. Step 3: Cross multiply
    81,480,072.30x = 122,220,108.45 × 38,433,351.30
  4. Step 4: Simplify right side
    81,480,072.30x = 4,697,328,363,982,948
  5. Step 5: Solve for x
    x = 4,697,328,363,982,948/81,480,072.30
  6. Step 6: Final answer
    x = 57,650,026.95

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.