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Finding the Fourth Proportional to 145,242.59, 217,863.71 and 50,472.78

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Solution

The fourth proportional to 145,242.59, 217,863.71 and 50,472.78 is: 75,709.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,242.59 : 217,863.71 = 50,472.78 : x
  2. Step 2: Convert to fraction form
    145,242.59/217,863.71 = 50,472.78/x
  3. Step 3: Cross multiply
    145,242.59x = 217,863.71 × 50,472.78
  4. Step 4: Simplify right side
    145,242.59x = 10,996,186,484.39
  5. Step 5: Solve for x
    x = 10,996,186,484.39/145,242.59
  6. Step 6: Final answer
    x = 75,709.11

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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.