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Finding the Fourth Proportional to 66,687.60, 100,007.10 and 26,689.80

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Solution

The fourth proportional to 66,687.60, 100,007.10 and 26,689.80 is: 40,024.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,687.60 : 100,007.10 = 26,689.80 : x
  2. Step 2: Convert to fraction form
    66,687.60/100,007.10 = 26,689.80/x
  3. Step 3: Cross multiply
    66,687.60x = 100,007.10 × 26,689.80
  4. Step 4: Simplify right side
    66,687.60x = 2,669,169,497.58
  5. Step 5: Solve for x
    x = 2,669,169,497.58/66,687.60
  6. Step 6: Final answer
    x = 40,024.97

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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.