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Finding the Fourth Proportional to 75,007.62, 103,472.78 and 49,487.09

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Solution

The fourth proportional to 75,007.62, 103,472.78 and 49,487.09 is: 68,267.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,007.62 : 103,472.78 = 49,487.09 : x
  2. Step 2: Convert to fraction form
    75,007.62/103,472.78 = 49,487.09/x
  3. Step 3: Cross multiply
    75,007.62x = 103,472.78 × 49,487.09
  4. Step 4: Simplify right side
    75,007.62x = 5,120,566,011.61
  5. Step 5: Solve for x
    x = 5,120,566,011.61/75,007.62
  6. Step 6: Final answer
    x = 68,267.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.