Home / 71,001.43-97,976.92-39,961.20

Finding the Fourth Proportional to 71,001.43, 97,976.92 and 39,961.20

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Solution

The fourth proportional to 71,001.43, 97,976.92 and 39,961.20 is: 55,143.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,001.43 : 97,976.92 = 39,961.20 : x
  2. Step 2: Convert to fraction form
    71,001.43/97,976.92 = 39,961.20/x
  3. Step 3: Cross multiply
    71,001.43x = 97,976.92 × 39,961.20
  4. Step 4: Simplify right side
    71,001.43x = 3,915,275,095.70
  5. Step 5: Solve for x
    x = 3,915,275,095.70/71,001.43
  6. Step 6: Final answer
    x = 55,143.61

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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.