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Finding the Fourth Proportional to 85,079.28, 127,540.05 and 37,669.11

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Solution

The fourth proportional to 85,079.28, 127,540.05 and 37,669.11 is: 56,468.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,079.28 : 127,540.05 = 37,669.11 : x
  2. Step 2: Convert to fraction form
    85,079.28/127,540.05 = 37,669.11/x
  3. Step 3: Cross multiply
    85,079.28x = 127,540.05 × 37,669.11
  4. Step 4: Simplify right side
    85,079.28x = 4,804,320,172.86
  5. Step 5: Solve for x
    x = 4,804,320,172.86/85,079.28
  6. Step 6: Final answer
    x = 56,468.75

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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.