Home / 39,985.43-55,179.88-22,080.47

Finding the Fourth Proportional to 39,985.43, 55,179.88 and 22,080.47

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Solution

The fourth proportional to 39,985.43, 55,179.88 and 22,080.47 is: 30,471.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,985.43 : 55,179.88 = 22,080.47 : x
  2. Step 2: Convert to fraction form
    39,985.43/55,179.88 = 22,080.47/x
  3. Step 3: Cross multiply
    39,985.43x = 55,179.88 × 22,080.47
  4. Step 4: Simplify right side
    39,985.43x = 1,218,397,684.94
  5. Step 5: Solve for x
    x = 1,218,397,684.94/39,985.43
  6. Step 6: Final answer
    x = 30,471.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.