Home / 80,951.32-121,353.47-28,332.10

Finding the Fourth Proportional to 80,951.32, 121,353.47 and 28,332.10

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Solution

The fourth proportional to 80,951.32, 121,353.47 and 28,332.10 is: 42,472.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,951.32 : 121,353.47 = 28,332.10 : x
  2. Step 2: Convert to fraction form
    80,951.32/121,353.47 = 28,332.10/x
  3. Step 3: Cross multiply
    80,951.32x = 121,353.47 × 28,332.10
  4. Step 4: Simplify right side
    80,951.32x = 3,438,198,647.39
  5. Step 5: Solve for x
    x = 3,438,198,647.39/80,951.32
  6. Step 6: Final answer
    x = 42,472.42

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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.