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Finding the Fourth Proportional to 69,046.75, 103,528.20 and 45,048.88

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Solution

The fourth proportional to 69,046.75, 103,528.20 and 45,048.88 is: 67,545.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,046.75 : 103,528.20 = 45,048.88 : x
  2. Step 2: Convert to fraction form
    69,046.75/103,528.20 = 45,048.88/x
  3. Step 3: Cross multiply
    69,046.75x = 103,528.20 × 45,048.88
  4. Step 4: Simplify right side
    69,046.75x = 4,663,829,233.17
  5. Step 5: Solve for x
    x = 4,663,829,233.17/69,046.75
  6. Step 6: Final answer
    x = 67,545.96

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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.