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Finding the Fourth Proportional to 79,657.71, 119,560.41 and 40,242.57

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Solution

The fourth proportional to 79,657.71, 119,560.41 and 40,242.57 is: 60,401.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,657.71 : 119,560.41 = 40,242.57 : x
  2. Step 2: Convert to fraction form
    79,657.71/119,560.41 = 40,242.57/x
  3. Step 3: Cross multiply
    79,657.71x = 119,560.41 × 40,242.57
  4. Step 4: Simplify right side
    79,657.71x = 4,811,418,168.65
  5. Step 5: Solve for x
    x = 4,811,418,168.65/79,657.71
  6. Step 6: Final answer
    x = 60,401.16

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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.