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Finding the Fourth Proportional to 60,157.52, 90,230.52 and 20,709.20

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Solution

The fourth proportional to 60,157.52, 90,230.52 and 20,709.20 is: 31,061.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,157.52 : 90,230.52 = 20,709.20 : x
  2. Step 2: Convert to fraction form
    60,157.52/90,230.52 = 20,709.20/x
  3. Step 3: Cross multiply
    60,157.52x = 90,230.52 × 20,709.20
  4. Step 4: Simplify right side
    60,157.52x = 1,868,601,884.78
  5. Step 5: Solve for x
    x = 1,868,601,884.78/60,157.52
  6. Step 6: Final answer
    x = 31,061.82

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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.