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Finding the Fourth Proportional to 69,586.72, 96,695.84 and 68,864.20

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Solution

The fourth proportional to 69,586.72, 96,695.84 and 68,864.20 is: 95,691.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,586.72 : 96,695.84 = 68,864.20 : x
  2. Step 2: Convert to fraction form
    69,586.72/96,695.84 = 68,864.20/x
  3. Step 3: Cross multiply
    69,586.72x = 96,695.84 × 68,864.20
  4. Step 4: Simplify right side
    69,586.72x = 6,658,881,664.93
  5. Step 5: Solve for x
    x = 6,658,881,664.93/69,586.72
  6. Step 6: Final answer
    x = 95,691.85

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.