Home / 57,132.80-78,842.40-31,983.20

Finding the Fourth Proportional to 57,132.80, 78,842.40 and 31,983.20

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Solution

The fourth proportional to 57,132.80, 78,842.40 and 31,983.20 is: 44,136.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,132.80 : 78,842.40 = 31,983.20 : x
  2. Step 2: Convert to fraction form
    57,132.80/78,842.40 = 31,983.20/x
  3. Step 3: Cross multiply
    57,132.80x = 78,842.40 × 31,983.20
  4. Step 4: Simplify right side
    57,132.80x = 2,521,632,247.68
  5. Step 5: Solve for x
    x = 2,521,632,247.68/57,132.80
  6. Step 6: Final answer
    x = 44,136.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.