Home / 80,883.15-121,379.40-45,344.40

Finding the Fourth Proportional to 80,883.15, 121,379.40 and 45,344.40

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Solution

The fourth proportional to 80,883.15, 121,379.40 and 45,344.40 is: 68,047.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,883.15 : 121,379.40 = 45,344.40 : x
  2. Step 2: Convert to fraction form
    80,883.15/121,379.40 = 45,344.40/x
  3. Step 3: Cross multiply
    80,883.15x = 121,379.40 × 45,344.40
  4. Step 4: Simplify right side
    80,883.15x = 5,503,876,065.36
  5. Step 5: Solve for x
    x = 5,503,876,065.36/80,883.15
  6. Step 6: Final answer
    x = 68,047.25

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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.