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Finding the Fourth Proportional to 84,489.28, 126,731.84 and 49,003.52

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Solution

The fourth proportional to 84,489.28, 126,731.84 and 49,003.52 is: 73,504.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,489.28 : 126,731.84 = 49,003.52 : x
  2. Step 2: Convert to fraction form
    84,489.28/126,731.84 = 49,003.52/x
  3. Step 3: Cross multiply
    84,489.28x = 126,731.84 × 49,003.52
  4. Step 4: Simplify right side
    84,489.28x = 6,210,306,256.08
  5. Step 5: Solve for x
    x = 6,210,306,256.08/84,489.28
  6. Step 6: Final answer
    x = 73,504.07

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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.