Home / 87,986.28-121,306.86-56,099.82

Finding the Fourth Proportional to 87,986.28, 121,306.86 and 56,099.82

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Solution

The fourth proportional to 87,986.28, 121,306.86 and 56,099.82 is: 77,344.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,986.28 : 121,306.86 = 56,099.82 : x
  2. Step 2: Convert to fraction form
    87,986.28/121,306.86 = 56,099.82/x
  3. Step 3: Cross multiply
    87,986.28x = 121,306.86 × 56,099.82
  4. Step 4: Simplify right side
    87,986.28x = 6,805,293,010.77
  5. Step 5: Solve for x
    x = 6,805,293,010.77/87,986.28
  6. Step 6: Final answer
    x = 77,344.93

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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.