Home / 80,899.77-121,367.17-30,979.87

Finding the Fourth Proportional to 80,899.77, 121,367.17 and 30,979.87

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Solution

The fourth proportional to 80,899.77, 121,367.17 and 30,979.87 is: 46,476.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,899.77 : 121,367.17 = 30,979.87 : x
  2. Step 2: Convert to fraction form
    80,899.77/121,367.17 = 30,979.87/x
  3. Step 3: Cross multiply
    80,899.77x = 121,367.17 × 30,979.87
  4. Step 4: Simplify right side
    80,899.77x = 3,759,938,387.13
  5. Step 5: Solve for x
    x = 3,759,938,387.13/80,899.77
  6. Step 6: Final answer
    x = 46,476.51

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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.