Home / 80,863.10-121,294.65-43,408.70

Finding the Fourth Proportional to 80,863.10, 121,294.65 and 43,408.70

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Solution

The fourth proportional to 80,863.10, 121,294.65 and 43,408.70 is: 65,113.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,863.10 : 121,294.65 = 43,408.70 : x
  2. Step 2: Convert to fraction form
    80,863.10/121,294.65 = 43,408.70/x
  3. Step 3: Cross multiply
    80,863.10x = 121,294.65 × 43,408.70
  4. Step 4: Simplify right side
    80,863.10x = 5,265,243,073.46
  5. Step 5: Solve for x
    x = 5,265,243,073.46/80,863.10
  6. Step 6: Final answer
    x = 65,113.05

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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.