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Finding the Fourth Proportional to 84,758.52, 127,173.66 and 42,616.44

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Solution

The fourth proportional to 84,758.52, 127,173.66 and 42,616.44 is: 63,942.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,758.52 : 127,173.66 = 42,616.44 : x
  2. Step 2: Convert to fraction form
    84,758.52/127,173.66 = 42,616.44/x
  3. Step 3: Cross multiply
    84,758.52x = 127,173.66 × 42,616.44
  4. Step 4: Simplify right side
    84,758.52x = 5,419,688,650.97
  5. Step 5: Solve for x
    x = 5,419,688,650.97/84,758.52
  6. Step 6: Final answer
    x = 63,942.70

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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.