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Finding the Fourth Proportional to 84,732.48, 127,098.72 and 45,169.65

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Solution

The fourth proportional to 84,732.48, 127,098.72 and 45,169.65 is: 67,754.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,732.48 : 127,098.72 = 45,169.65 : x
  2. Step 2: Convert to fraction form
    84,732.48/127,098.72 = 45,169.65/x
  3. Step 3: Cross multiply
    84,732.48x = 127,098.72 × 45,169.65
  4. Step 4: Simplify right side
    84,732.48x = 5,741,004,697.85
  5. Step 5: Solve for x
    x = 5,741,004,697.85/84,732.48
  6. Step 6: Final answer
    x = 67,754.48

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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.