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Finding the Fourth Proportional to 71,304.92, 98,401.96 and 39,039

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Solution

The fourth proportional to 71,304.92, 98,401.96 and 39,039 is: 53,874.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,304.92 : 98,401.96 = 39,039 : x
  2. Step 2: Convert to fraction form
    71,304.92/98,401.96 = 39,039/x
  3. Step 3: Cross multiply
    71,304.92x = 98,401.96 × 39,039
  4. Step 4: Simplify right side
    71,304.92x = 3,841,514,116.44
  5. Step 5: Solve for x
    x = 3,841,514,116.44/71,304.92
  6. Step 6: Final answer
    x = 53,874.46

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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.