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Finding the Fourth Proportional to 81,886.76, 122,830.15 and 22,722.45

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Solution

The fourth proportional to 81,886.76, 122,830.15 and 22,722.45 is: 34,083.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,886.76 : 122,830.15 = 22,722.45 : x
  2. Step 2: Convert to fraction form
    81,886.76/122,830.15 = 22,722.45/x
  3. Step 3: Cross multiply
    81,886.76x = 122,830.15 × 22,722.45
  4. Step 4: Simplify right side
    81,886.76x = 2,791,002,072.76
  5. Step 5: Solve for x
    x = 2,791,002,072.76/81,886.76
  6. Step 6: Final answer
    x = 34,083.68

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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.