Home / 81,240.39-121,863.09-22,077.33

Finding the Fourth Proportional to 81,240.39, 121,863.09 and 22,077.33

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Solution

The fourth proportional to 81,240.39, 121,863.09 and 22,077.33 is: 33,116.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,240.39 : 121,863.09 = 22,077.33 : x
  2. Step 2: Convert to fraction form
    81,240.39/121,863.09 = 22,077.33/x
  3. Step 3: Cross multiply
    81,240.39x = 121,863.09 × 22,077.33
  4. Step 4: Simplify right side
    81,240.39x = 2,690,411,652.75
  5. Step 5: Solve for x
    x = 2,690,411,652.75/81,240.39
  6. Step 6: Final answer
    x = 33,116.68

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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.