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Finding the Fourth Proportional to 101,614.79, 140,296.85 and 63,432.47

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Solution

The fourth proportional to 101,614.79, 140,296.85 and 63,432.47 is: 87,579.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,614.79 : 140,296.85 = 63,432.47 : x
  2. Step 2: Convert to fraction form
    101,614.79/140,296.85 = 63,432.47/x
  3. Step 3: Cross multiply
    101,614.79x = 140,296.85 × 63,432.47
  4. Step 4: Simplify right side
    101,614.79x = 8,899,375,728.72
  5. Step 5: Solve for x
    x = 8,899,375,728.72/101,614.79
  6. Step 6: Final answer
    x = 87,579.53

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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.