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Finding the Fourth Proportional to 71,073.62, 98,081.80 and 38,808.30

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Solution

The fourth proportional to 71,073.62, 98,081.80 and 38,808.30 is: 53,555.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,073.62 : 98,081.80 = 38,808.30 : x
  2. Step 2: Convert to fraction form
    71,073.62/98,081.80 = 38,808.30/x
  3. Step 3: Cross multiply
    71,073.62x = 98,081.80 × 38,808.30
  4. Step 4: Simplify right side
    71,073.62x = 3,806,387,918.94
  5. Step 5: Solve for x
    x = 3,806,387,918.94/71,073.62
  6. Step 6: Final answer
    x = 53,555.57

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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.