Home / 39,985.31-55,179.72-22,080.35

Finding the Fourth Proportional to 39,985.31, 55,179.72 and 22,080.35

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Solution

The fourth proportional to 39,985.31, 55,179.72 and 22,080.35 is: 30,470.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,985.31 : 55,179.72 = 22,080.35 : x
  2. Step 2: Convert to fraction form
    39,985.31/55,179.72 = 22,080.35/x
  3. Step 3: Cross multiply
    39,985.31x = 55,179.72 × 22,080.35
  4. Step 4: Simplify right side
    39,985.31x = 1,218,387,254.60
  5. Step 5: Solve for x
    x = 1,218,387,254.60/39,985.31
  6. Step 6: Final answer
    x = 30,470.88

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1.5x scale

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.