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Finding the Fourth Proportional to 66,909.74, 100,368.40 and 29,487.38

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Solution

The fourth proportional to 66,909.74, 100,368.40 and 29,487.38 is: 44,232.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,909.74 : 100,368.40 = 29,487.38 : x
  2. Step 2: Convert to fraction form
    66,909.74/100,368.40 = 29,487.38/x
  3. Step 3: Cross multiply
    66,909.74x = 100,368.40 × 29,487.38
  4. Step 4: Simplify right side
    66,909.74x = 2,959,601,150.79
  5. Step 5: Solve for x
    x = 2,959,601,150.79/66,909.74
  6. Step 6: Final answer
    x = 44,232.74

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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.