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Finding the Fourth Proportional to 124,342.49, 186,385.25 and 57,728.30

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Solution

The fourth proportional to 124,342.49, 186,385.25 and 57,728.30 is: 86,532.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,342.49 : 186,385.25 = 57,728.30 : x
  2. Step 2: Convert to fraction form
    124,342.49/186,385.25 = 57,728.30/x
  3. Step 3: Cross multiply
    124,342.49x = 186,385.25 × 57,728.30
  4. Step 4: Simplify right side
    124,342.49x = 10,759,702,839.97
  5. Step 5: Solve for x
    x = 10,759,702,839.97/124,342.49
  6. Step 6: Final answer
    x = 86,532.79

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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.