Home / 105,691.27-145,853.92-57,943.59

Finding the Fourth Proportional to 105,691.27, 145,853.92 and 57,943.59

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Solution

The fourth proportional to 105,691.27, 145,853.92 and 57,943.59 is: 79,962.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,691.27 : 145,853.92 = 57,943.59 : x
  2. Step 2: Convert to fraction form
    105,691.27/145,853.92 = 57,943.59/x
  3. Step 3: Cross multiply
    105,691.27x = 145,853.92 × 57,943.59
  4. Step 4: Simplify right side
    105,691.27x = 8,451,299,960.15
  5. Step 5: Solve for x
    x = 8,451,299,960.15/105,691.27
  6. Step 6: Final answer
    x = 79,962.14

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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.