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Finding the Fourth Proportional to 83,239.97, 124,821.14 and 43,248.21

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Solution

The fourth proportional to 83,239.97, 124,821.14 and 43,248.21 is: 64,852.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,239.97 : 124,821.14 = 43,248.21 : x
  2. Step 2: Convert to fraction form
    83,239.97/124,821.14 = 43,248.21/x
  3. Step 3: Cross multiply
    83,239.97x = 124,821.14 × 43,248.21
  4. Step 4: Simplify right side
    83,239.97x = 5,398,290,875.16
  5. Step 5: Solve for x
    x = 5,398,290,875.16/83,239.97
  6. Step 6: Final answer
    x = 64,852.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.