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Finding the Fourth Proportional to 79,711.74, 119,463.66 and 40,247.46

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Solution

The fourth proportional to 79,711.74, 119,463.66 and 40,247.46 is: 60,318.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,711.74 : 119,463.66 = 40,247.46 : x
  2. Step 2: Convert to fraction form
    79,711.74/119,463.66 = 40,247.46/x
  3. Step 3: Cross multiply
    79,711.74x = 119,463.66 × 40,247.46
  4. Step 4: Simplify right side
    79,711.74x = 4,808,108,877.30
  5. Step 5: Solve for x
    x = 4,808,108,877.30/79,711.74
  6. Step 6: Final answer
    x = 60,318.70

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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.