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Finding the Fourth Proportional to 40,073.64, 60,135 and 20,366.28

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Solution

The fourth proportional to 40,073.64, 60,135 and 20,366.28 is: 30,561.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,073.64 : 60,135 = 20,366.28 : x
  2. Step 2: Convert to fraction form
    40,073.64/60,135 = 20,366.28/x
  3. Step 3: Cross multiply
    40,073.64x = 60,135 × 20,366.28
  4. Step 4: Simplify right side
    40,073.64x = 1,224,726,247.80
  5. Step 5: Solve for x
    x = 1,224,726,247.80/40,073.64
  6. Step 6: Final answer
    x = 30,561.89

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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.