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Finding the Fourth Proportional to 71,028.52, 98,019.90 and 38,763.39

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Solution

The fourth proportional to 71,028.52, 98,019.90 and 38,763.39 is: 53,493.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,028.52 : 98,019.90 = 38,763.39 : x
  2. Step 2: Convert to fraction form
    71,028.52/98,019.90 = 38,763.39/x
  3. Step 3: Cross multiply
    71,028.52x = 98,019.90 × 38,763.39
  4. Step 4: Simplify right side
    71,028.52x = 3,799,583,042.97
  5. Step 5: Solve for x
    x = 3,799,583,042.97/71,028.52
  6. Step 6: Final answer
    x = 53,493.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.