Home / 80,835.84-121,236.48-25,419.52

Finding the Fourth Proportional to 80,835.84, 121,236.48 and 25,419.52

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Solution

The fourth proportional to 80,835.84, 121,236.48 and 25,419.52 is: 38,123.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,835.84 : 121,236.48 = 25,419.52 : x
  2. Step 2: Convert to fraction form
    80,835.84/121,236.48 = 25,419.52/x
  3. Step 3: Cross multiply
    80,835.84x = 121,236.48 × 25,419.52
  4. Step 4: Simplify right side
    80,835.84x = 3,081,773,128.09
  5. Step 5: Solve for x
    x = 3,081,773,128.09/80,835.84
  6. Step 6: Final answer
    x = 38,123.85

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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.