Home / 80,731.32-121,127.73-36,347.87

Finding the Fourth Proportional to 80,731.32, 121,127.73 and 36,347.87

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Solution

The fourth proportional to 80,731.32, 121,127.73 and 36,347.87 is: 54,535.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,731.32 : 121,127.73 = 36,347.87 : x
  2. Step 2: Convert to fraction form
    80,731.32/121,127.73 = 36,347.87/x
  3. Step 3: Cross multiply
    80,731.32x = 121,127.73 × 36,347.87
  4. Step 4: Simplify right side
    80,731.32x = 4,402,734,377.80
  5. Step 5: Solve for x
    x = 4,402,734,377.80/80,731.32
  6. Step 6: Final answer
    x = 54,535.64

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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.