Home / 80,775.54-121,154.67-28,186.02

Finding the Fourth Proportional to 80,775.54, 121,154.67 and 28,186.02

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Solution

The fourth proportional to 80,775.54, 121,154.67 and 28,186.02 is: 42,276.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,775.54 : 121,154.67 = 28,186.02 : x
  2. Step 2: Convert to fraction form
    80,775.54/121,154.67 = 28,186.02/x
  3. Step 3: Cross multiply
    80,775.54x = 121,154.67 × 28,186.02
  4. Step 4: Simplify right side
    80,775.54x = 3,414,867,951.71
  5. Step 5: Solve for x
    x = 3,414,867,951.71/80,775.54
  6. Step 6: Final answer
    x = 42,276.02

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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.