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Finding the Fourth Proportional to 57,868.76, 86,713.36 and 40,134.02

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Solution

The fourth proportional to 57,868.76, 86,713.36 and 40,134.02 is: 60,138.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,868.76 : 86,713.36 = 40,134.02 : x
  2. Step 2: Convert to fraction form
    57,868.76/86,713.36 = 40,134.02/x
  3. Step 3: Cross multiply
    57,868.76x = 86,713.36 × 40,134.02
  4. Step 4: Simplify right side
    57,868.76x = 3,480,155,190.61
  5. Step 5: Solve for x
    x = 3,480,155,190.61/57,868.76
  6. Step 6: Final answer
    x = 60,138.75

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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.