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Finding the Fourth Proportional to 101,679.42, 140,301.11 and 63,432.89

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Solution

The fourth proportional to 101,679.42, 140,301.11 and 63,432.89 is: 87,527.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,679.42 : 140,301.11 = 63,432.89 : x
  2. Step 2: Convert to fraction form
    101,679.42/140,301.11 = 63,432.89/x
  3. Step 3: Cross multiply
    101,679.42x = 140,301.11 × 63,432.89
  4. Step 4: Simplify right side
    101,679.42x = 8,899,704,860.71
  5. Step 5: Solve for x
    x = 8,899,704,860.71/101,679.42
  6. Step 6: Final answer
    x = 87,527.10

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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.