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Finding the Fourth Proportional to 66,615.54, 100,050.48 and 38,591.88

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Solution

The fourth proportional to 66,615.54, 100,050.48 and 38,591.88 is: 57,961.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,615.54 : 100,050.48 = 38,591.88 : x
  2. Step 2: Convert to fraction form
    66,615.54/100,050.48 = 38,591.88/x
  3. Step 3: Cross multiply
    66,615.54x = 100,050.48 × 38,591.88
  4. Step 4: Simplify right side
    66,615.54x = 3,861,136,118.10
  5. Step 5: Solve for x
    x = 3,861,136,118.10/66,615.54
  6. Step 6: Final answer
    x = 57,961.49

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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.