Home / 80,928.90-121,394.47-31,011.52

Finding the Fourth Proportional to 80,928.90, 121,394.47 and 31,011.52

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Solution

The fourth proportional to 80,928.90, 121,394.47 and 31,011.52 is: 46,517.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,928.90 : 121,394.47 = 31,011.52 : x
  2. Step 2: Convert to fraction form
    80,928.90/121,394.47 = 31,011.52/x
  3. Step 3: Cross multiply
    80,928.90x = 121,394.47 × 31,011.52
  4. Step 4: Simplify right side
    80,928.90x = 3,764,627,034.29
  5. Step 5: Solve for x
    x = 3,764,627,034.29/80,928.90
  6. Step 6: Final answer
    x = 46,517.71

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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.