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Finding the Fourth Proportional to 84,638.60, 127,012.95 and 36,654.07

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Solution

The fourth proportional to 84,638.60, 127,012.95 and 36,654.07 is: 55,004.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,638.60 : 127,012.95 = 36,654.07 : x
  2. Step 2: Convert to fraction form
    84,638.60/127,012.95 = 36,654.07/x
  3. Step 3: Cross multiply
    84,638.60x = 127,012.95 × 36,654.07
  4. Step 4: Simplify right side
    84,638.60x = 4,655,541,560.21
  5. Step 5: Solve for x
    x = 4,655,541,560.21/84,638.60
  6. Step 6: Final answer
    x = 55,004.95

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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.