Home / 81,374.60-121,451.82-76,060.19

Finding the Fourth Proportional to 81,374.60, 121,451.82 and 76,060.19

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Solution

The fourth proportional to 81,374.60, 121,451.82 and 76,060.19 is: 113,520.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,374.60 : 121,451.82 = 76,060.19 : x
  2. Step 2: Convert to fraction form
    81,374.60/121,451.82 = 76,060.19/x
  3. Step 3: Cross multiply
    81,374.60x = 121,451.82 × 76,060.19
  4. Step 4: Simplify right side
    81,374.60x = 9,237,647,897.79
  5. Step 5: Solve for x
    x = 9,237,647,897.79/81,374.60
  6. Step 6: Final answer
    x = 113,520.05

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.