Home / 87,754.96-121,013.40-66,297.52

Finding the Fourth Proportional to 87,754.96, 121,013.40 and 66,297.52

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Solution

The fourth proportional to 87,754.96, 121,013.40 and 66,297.52 is: 91,423.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,754.96 : 121,013.40 = 66,297.52 : x
  2. Step 2: Convert to fraction form
    87,754.96/121,013.40 = 66,297.52/x
  3. Step 3: Cross multiply
    87,754.96x = 121,013.40 × 66,297.52
  4. Step 4: Simplify right side
    87,754.96x = 8,022,888,306.77
  5. Step 5: Solve for x
    x = 8,022,888,306.77/87,754.96
  6. Step 6: Final answer
    x = 91,423.76

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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.