Home / 87,818.50-121,156.46-57,620.49

Finding the Fourth Proportional to 87,818.50, 121,156.46 and 57,620.49

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Solution

The fourth proportional to 87,818.50, 121,156.46 and 57,620.49 is: 79,494.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,818.50 : 121,156.46 = 57,620.49 : x
  2. Step 2: Convert to fraction form
    87,818.50/121,156.46 = 57,620.49/x
  3. Step 3: Cross multiply
    87,818.50x = 121,156.46 × 57,620.49
  4. Step 4: Simplify right side
    87,818.50x = 6,981,093,697.98
  5. Step 5: Solve for x
    x = 6,981,093,697.98/87,818.50
  6. Step 6: Final answer
    x = 79,494.57

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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.