Home / 80,898.27-121,364.70-28,309.47

Finding the Fourth Proportional to 80,898.27, 121,364.70 and 28,309.47

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Solution

The fourth proportional to 80,898.27, 121,364.70 and 28,309.47 is: 42,470.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,898.27 : 121,364.70 = 28,309.47 : x
  2. Step 2: Convert to fraction form
    80,898.27/121,364.70 = 28,309.47/x
  3. Step 3: Cross multiply
    80,898.27x = 121,364.70 × 28,309.47
  4. Step 4: Simplify right side
    80,898.27x = 3,435,770,333.71
  5. Step 5: Solve for x
    x = 3,435,770,333.71/80,898.27
  6. Step 6: Final answer
    x = 42,470.26

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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.