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Finding the Fourth Proportional to 79,516.80, 119,044.80 and 71,222.40

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Solution

The fourth proportional to 79,516.80, 119,044.80 and 71,222.40 is: 106,627.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,516.80 : 119,044.80 = 71,222.40 : x
  2. Step 2: Convert to fraction form
    79,516.80/119,044.80 = 71,222.40/x
  3. Step 3: Cross multiply
    79,516.80x = 119,044.80 × 71,222.40
  4. Step 4: Simplify right side
    79,516.80x = 8,478,656,363.52
  5. Step 5: Solve for x
    x = 8,478,656,363.52/79,516.80
  6. Step 6: Final answer
    x = 106,627.23

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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.