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Finding the Fourth Proportional to 85,099.68, 127,649.52 and 38,365.92

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Solution

The fourth proportional to 85,099.68, 127,649.52 and 38,365.92 is: 57,548.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,099.68 : 127,649.52 = 38,365.92 : x
  2. Step 2: Convert to fraction form
    85,099.68/127,649.52 = 38,365.92/x
  3. Step 3: Cross multiply
    85,099.68x = 127,649.52 × 38,365.92
  4. Step 4: Simplify right side
    85,099.68x = 4,897,391,272.36
  5. Step 5: Solve for x
    x = 4,897,391,272.36/85,099.68
  6. Step 6: Final answer
    x = 57,548.88

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1.5x scale

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.