Home / 81,249.83-121,876.12-22,084.05

Finding the Fourth Proportional to 81,249.83, 121,876.12 and 22,084.05

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Solution

The fourth proportional to 81,249.83, 121,876.12 and 22,084.05 is: 33,126.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,249.83 : 121,876.12 = 22,084.05 : x
  2. Step 2: Convert to fraction form
    81,249.83/121,876.12 = 22,084.05/x
  3. Step 3: Cross multiply
    81,249.83x = 121,876.12 × 22,084.05
  4. Step 4: Simplify right side
    81,249.83x = 2,691,518,327.89
  5. Step 5: Solve for x
    x = 2,691,518,327.89/81,249.83
  6. Step 6: Final answer
    x = 33,126.45

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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.