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Finding the Fourth Proportional to 71,038.92, 98,034.39 and 39,207.14

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Solution

The fourth proportional to 71,038.92, 98,034.39 and 39,207.14 is: 54,106.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,038.92 : 98,034.39 = 39,207.14 : x
  2. Step 2: Convert to fraction form
    71,038.92/98,034.39 = 39,207.14/x
  3. Step 3: Cross multiply
    71,038.92x = 98,034.39 × 39,207.14
  4. Step 4: Simplify right side
    71,038.92x = 3,843,648,053.54
  5. Step 5: Solve for x
    x = 3,843,648,053.54/71,038.92
  6. Step 6: Final answer
    x = 54,106.23

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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.