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Finding the Fourth Proportional to 84,882.60, 127,230.90 and 42,695.40

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Solution

The fourth proportional to 84,882.60, 127,230.90 and 42,695.40 is: 63,996.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,882.60 : 127,230.90 = 42,695.40 : x
  2. Step 2: Convert to fraction form
    84,882.60/127,230.90 = 42,695.40/x
  3. Step 3: Cross multiply
    84,882.60x = 127,230.90 × 42,695.40
  4. Step 4: Simplify right side
    84,882.60x = 5,432,174,167.86
  5. Step 5: Solve for x
    x = 5,432,174,167.86/84,882.60
  6. Step 6: Final answer
    x = 63,996.32

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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.