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Finding the Fourth Proportional to 101,531.72, 152,352.68 and 42,372.56

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Solution

The fourth proportional to 101,531.72, 152,352.68 and 42,372.56 is: 63,581.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,531.72 : 152,352.68 = 42,372.56 : x
  2. Step 2: Convert to fraction form
    101,531.72/152,352.68 = 42,372.56/x
  3. Step 3: Cross multiply
    101,531.72x = 152,352.68 × 42,372.56
  4. Step 4: Simplify right side
    101,531.72x = 6,455,573,074.46
  5. Step 5: Solve for x
    x = 6,455,573,074.46/101,531.72
  6. Step 6: Final answer
    x = 63,581.84

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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.