Home / 81,252.11-121,919.18-36,850.55

Finding the Fourth Proportional to 81,252.11, 121,919.18 and 36,850.55

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Solution

The fourth proportional to 81,252.11, 121,919.18 and 36,850.55 is: 55,294.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,252.11 : 121,919.18 = 36,850.55 : x
  2. Step 2: Convert to fraction form
    81,252.11/121,919.18 = 36,850.55/x
  3. Step 3: Cross multiply
    81,252.11x = 121,919.18 × 36,850.55
  4. Step 4: Simplify right side
    81,252.11x = 4,492,788,044.70
  5. Step 5: Solve for x
    x = 4,492,788,044.70/81,252.11
  6. Step 6: Final answer
    x = 55,294.42

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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.