Home / 80,768.30-121,282.05-54,589.10

Finding the Fourth Proportional to 80,768.30, 121,282.05 and 54,589.10

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Solution

The fourth proportional to 80,768.30, 121,282.05 and 54,589.10 is: 81,971.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,768.30 : 121,282.05 = 54,589.10 : x
  2. Step 2: Convert to fraction form
    80,768.30/121,282.05 = 54,589.10/x
  3. Step 3: Cross multiply
    80,768.30x = 121,282.05 × 54,589.10
  4. Step 4: Simplify right side
    80,768.30x = 6,620,677,955.66
  5. Step 5: Solve for x
    x = 6,620,677,955.66/80,768.30
  6. Step 6: Final answer
    x = 81,971.24

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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.