Home / 81,248.09-121,874.66-22,085.01

Finding the Fourth Proportional to 81,248.09, 121,874.66 and 22,085.01

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Solution

The fourth proportional to 81,248.09, 121,874.66 and 22,085.01 is: 33,128.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,248.09 : 121,874.66 = 22,085.01 : x
  2. Step 2: Convert to fraction form
    81,248.09/121,874.66 = 22,085.01/x
  3. Step 3: Cross multiply
    81,248.09x = 121,874.66 × 22,085.01
  4. Step 4: Simplify right side
    81,248.09x = 2,691,603,057.24
  5. Step 5: Solve for x
    x = 2,691,603,057.24/81,248.09
  6. Step 6: Final answer
    x = 33,128.20

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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.