Home / 81,335.05-121,998.98-22,170.72

Finding the Fourth Proportional to 81,335.05, 121,998.98 and 22,170.72

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Solution

The fourth proportional to 81,335.05, 121,998.98 and 22,170.72 is: 33,255.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,335.05 : 121,998.98 = 22,170.72 : x
  2. Step 2: Convert to fraction form
    81,335.05/121,998.98 = 22,170.72/x
  3. Step 3: Cross multiply
    81,335.05x = 121,998.98 × 22,170.72
  4. Step 4: Simplify right side
    81,335.05x = 2,704,805,225.87
  5. Step 5: Solve for x
    x = 2,704,805,225.87/81,335.05
  6. Step 6: Final answer
    x = 33,255.10

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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.