Home / 81,249.30-121,916.45-33,253.53

Finding the Fourth Proportional to 81,249.30, 121,916.45 and 33,253.53

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Solution

The fourth proportional to 81,249.30, 121,916.45 and 33,253.53 is: 49,897.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,249.30 : 121,916.45 = 33,253.53 : x
  2. Step 2: Convert to fraction form
    81,249.30/121,916.45 = 33,253.53/x
  3. Step 3: Cross multiply
    81,249.30x = 121,916.45 × 33,253.53
  4. Step 4: Simplify right side
    81,249.30x = 4,054,152,327.57
  5. Step 5: Solve for x
    x = 4,054,152,327.57/81,249.30
  6. Step 6: Final answer
    x = 49,897.69

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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.