Home / 81,197.13-121,781.31-22,037.40

Finding the Fourth Proportional to 81,197.13, 121,781.31 and 22,037.40

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Solution

The fourth proportional to 81,197.13, 121,781.31 and 22,037.40 is: 33,052.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,197.13 : 121,781.31 = 22,037.40 : x
  2. Step 2: Convert to fraction form
    81,197.13/121,781.31 = 22,037.40/x
  3. Step 3: Cross multiply
    81,197.13x = 121,781.31 × 22,037.40
  4. Step 4: Simplify right side
    81,197.13x = 2,683,743,440.99
  5. Step 5: Solve for x
    x = 2,683,743,440.99/81,197.13
  6. Step 6: Final answer
    x = 33,052.20

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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.