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Finding the Fourth Proportional to 129,302.55, 193,954.03 and 40,562.87

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Solution

The fourth proportional to 129,302.55, 193,954.03 and 40,562.87 is: 60,844.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,302.55 : 193,954.03 = 40,562.87 : x
  2. Step 2: Convert to fraction form
    129,302.55/193,954.03 = 40,562.87/x
  3. Step 3: Cross multiply
    129,302.55x = 193,954.03 × 40,562.87
  4. Step 4: Simplify right side
    129,302.55x = 7,867,331,033.69
  5. Step 5: Solve for x
    x = 7,867,331,033.69/129,302.55
  6. Step 6: Final answer
    x = 60,844.36

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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.