Home / 80,937.77-121,332.69-28,318.55

Finding the Fourth Proportional to 80,937.77, 121,332.69 and 28,318.55

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Solution

The fourth proportional to 80,937.77, 121,332.69 and 28,318.55 is: 42,451.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,937.77 : 121,332.69 = 28,318.55 : x
  2. Step 2: Convert to fraction form
    80,937.77/121,332.69 = 28,318.55/x
  3. Step 3: Cross multiply
    80,937.77x = 121,332.69 × 28,318.55
  4. Step 4: Simplify right side
    80,937.77x = 3,435,965,241.74
  5. Step 5: Solve for x
    x = 3,435,965,241.74/80,937.77
  6. Step 6: Final answer
    x = 42,451.94

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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.