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Finding the Fourth Proportional to 71,006.54, 97,990.16 and 39,175.43

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Solution

The fourth proportional to 71,006.54, 97,990.16 and 39,175.43 is: 54,062.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,006.54 : 97,990.16 = 39,175.43 : x
  2. Step 2: Convert to fraction form
    71,006.54/97,990.16 = 39,175.43/x
  3. Step 3: Cross multiply
    71,006.54x = 97,990.16 × 39,175.43
  4. Step 4: Simplify right side
    71,006.54x = 3,838,805,967.94
  5. Step 5: Solve for x
    x = 3,838,805,967.94/71,006.54
  6. Step 6: Final answer
    x = 54,062.71

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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.