Home / 57,972.20-87,047.40-31,728.20

Finding the Fourth Proportional to 57,972.20, 87,047.40 and 31,728.20

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Solution

The fourth proportional to 57,972.20, 87,047.40 and 31,728.20 is: 47,641.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,972.20 : 87,047.40 = 31,728.20 : x
  2. Step 2: Convert to fraction form
    57,972.20/87,047.40 = 31,728.20/x
  3. Step 3: Cross multiply
    57,972.20x = 87,047.40 × 31,728.20
  4. Step 4: Simplify right side
    57,972.20x = 2,761,857,316.68
  5. Step 5: Solve for x
    x = 2,761,857,316.68/57,972.20
  6. Step 6: Final answer
    x = 47,641.06

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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.