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Finding the Fourth Proportional to 87,134.76, 130,494.78 and 50,121

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Solution

The fourth proportional to 87,134.76, 130,494.78 and 50,121 is: 75,062.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,134.76 : 130,494.78 = 50,121 : x
  2. Step 2: Convert to fraction form
    87,134.76/130,494.78 = 50,121/x
  3. Step 3: Cross multiply
    87,134.76x = 130,494.78 × 50,121
  4. Step 4: Simplify right side
    87,134.76x = 6,540,528,868.38
  5. Step 5: Solve for x
    x = 6,540,528,868.38/87,134.76
  6. Step 6: Final answer
    x = 75,062.22

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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.