Home / 89,171.28-122,948.76-77,049.86

Finding the Fourth Proportional to 89,171.28, 122,948.76 and 77,049.86

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Solution

The fourth proportional to 89,171.28, 122,948.76 and 77,049.86 is: 106,235.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,171.28 : 122,948.76 = 77,049.86 : x
  2. Step 2: Convert to fraction form
    89,171.28/122,948.76 = 77,049.86/x
  3. Step 3: Cross multiply
    89,171.28x = 122,948.76 × 77,049.86
  4. Step 4: Simplify right side
    89,171.28x = 9,473,184,130.43
  5. Step 5: Solve for x
    x = 9,473,184,130.43/89,171.28
  6. Step 6: Final answer
    x = 106,235.82

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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.