Home / 81,243.42-121,867.59-22,080.34

Finding the Fourth Proportional to 81,243.42, 121,867.59 and 22,080.34

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Solution

The fourth proportional to 81,243.42, 121,867.59 and 22,080.34 is: 33,121.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,243.42 : 121,867.59 = 22,080.34 : x
  2. Step 2: Convert to fraction form
    81,243.42/121,867.59 = 22,080.34/x
  3. Step 3: Cross multiply
    81,243.42x = 121,867.59 × 22,080.34
  4. Step 4: Simplify right side
    81,243.42x = 2,690,877,822.18
  5. Step 5: Solve for x
    x = 2,690,877,822.18/81,243.42
  6. Step 6: Final answer
    x = 33,121.18

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1.5x scale

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.