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Finding the Fourth Proportional to 77,217.72, 115,850.10 and 37,769.10

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Solution

The fourth proportional to 77,217.72, 115,850.10 and 37,769.10 is: 56,665.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,217.72 : 115,850.10 = 37,769.10 : x
  2. Step 2: Convert to fraction form
    77,217.72/115,850.10 = 37,769.10/x
  3. Step 3: Cross multiply
    77,217.72x = 115,850.10 × 37,769.10
  4. Step 4: Simplify right side
    77,217.72x = 4,375,554,011.91
  5. Step 5: Solve for x
    x = 4,375,554,011.91/77,217.72
  6. Step 6: Final answer
    x = 56,665.15

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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.