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Finding the Fourth Proportional to 69,521.87, 95,889.20 and 45,639.83

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Solution

The fourth proportional to 69,521.87, 95,889.20 and 45,639.83 is: 62,949.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,521.87 : 95,889.20 = 45,639.83 : x
  2. Step 2: Convert to fraction form
    69,521.87/95,889.20 = 45,639.83/x
  3. Step 3: Cross multiply
    69,521.87x = 95,889.20 × 45,639.83
  4. Step 4: Simplify right side
    69,521.87x = 4,376,366,079.19
  5. Step 5: Solve for x
    x = 4,376,366,079.19/69,521.87
  6. Step 6: Final answer
    x = 62,949.49

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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.