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Finding the Fourth Proportional to 66,493.44, 99,740.19 and 38,772

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Solution

The fourth proportional to 66,493.44, 99,740.19 and 38,772 is: 58,158.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,493.44 : 99,740.19 = 38,772 : x
  2. Step 2: Convert to fraction form
    66,493.44/99,740.19 = 38,772/x
  3. Step 3: Cross multiply
    66,493.44x = 99,740.19 × 38,772
  4. Step 4: Simplify right side
    66,493.44x = 3,867,126,646.68
  5. Step 5: Solve for x
    x = 3,867,126,646.68/66,493.44
  6. Step 6: Final answer
    x = 58,158.02

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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.