Home / 57,138.75-78,851.49-31,988.79

Finding the Fourth Proportional to 57,138.75, 78,851.49 and 31,988.79

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Solution

The fourth proportional to 57,138.75, 78,851.49 and 31,988.79 is: 44,144.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,138.75 : 78,851.49 = 31,988.79 : x
  2. Step 2: Convert to fraction form
    57,138.75/78,851.49 = 31,988.79/x
  3. Step 3: Cross multiply
    57,138.75x = 78,851.49 × 31,988.79
  4. Step 4: Simplify right side
    57,138.75x = 2,522,363,754.80
  5. Step 5: Solve for x
    x = 2,522,363,754.80/57,138.75
  6. Step 6: Final answer
    x = 44,144.54

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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.