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Finding the Fourth Proportional to 84,854.89, 127,282.70 and 28,695.30

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Solution

The fourth proportional to 84,854.89, 127,282.70 and 28,695.30 is: 43,043.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,854.89 : 127,282.70 = 28,695.30 : x
  2. Step 2: Convert to fraction form
    84,854.89/127,282.70 = 28,695.30/x
  3. Step 3: Cross multiply
    84,854.89x = 127,282.70 × 28,695.30
  4. Step 4: Simplify right side
    84,854.89x = 3,652,414,481.42
  5. Step 5: Solve for x
    x = 3,652,414,481.42/84,854.89
  6. Step 6: Final answer
    x = 43,043.06

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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.