Home / 81,401.10-122,101.65-49,908.30

Finding the Fourth Proportional to 81,401.10, 122,101.65 and 49,908.30

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Solution

The fourth proportional to 81,401.10, 122,101.65 and 49,908.30 is: 74,862.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,401.10 : 122,101.65 = 49,908.30 : x
  2. Step 2: Convert to fraction form
    81,401.10/122,101.65 = 49,908.30/x
  3. Step 3: Cross multiply
    81,401.10x = 122,101.65 × 49,908.30
  4. Step 4: Simplify right side
    81,401.10x = 6,093,885,778.70
  5. Step 5: Solve for x
    x = 6,093,885,778.70/81,401.10
  6. Step 6: Final answer
    x = 74,862.45

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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.