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Finding the Fourth Proportional to 70,489.53, 105,732.27 and 26,115.30

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Solution

The fourth proportional to 70,489.53, 105,732.27 and 26,115.30 is: 39,172.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,489.53 : 105,732.27 = 26,115.30 : x
  2. Step 2: Convert to fraction form
    70,489.53/105,732.27 = 26,115.30/x
  3. Step 3: Cross multiply
    70,489.53x = 105,732.27 × 26,115.30
  4. Step 4: Simplify right side
    70,489.53x = 2,761,229,950.73
  5. Step 5: Solve for x
    x = 2,761,229,950.73/70,489.53
  6. Step 6: Final answer
    x = 39,172.20

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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.