Home / 80,913.30-121,305.15-34,127.70

Finding the Fourth Proportional to 80,913.30, 121,305.15 and 34,127.70

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Solution

The fourth proportional to 80,913.30, 121,305.15 and 34,127.70 is: 51,164.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,913.30 : 121,305.15 = 34,127.70 : x
  2. Step 2: Convert to fraction form
    80,913.30/121,305.15 = 34,127.70/x
  3. Step 3: Cross multiply
    80,913.30x = 121,305.15 × 34,127.70
  4. Step 4: Simplify right side
    80,913.30x = 4,139,865,767.66
  5. Step 5: Solve for x
    x = 4,139,865,767.66/80,913.30
  6. Step 6: Final answer
    x = 51,164.22

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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.