Home / 80,948.10-121,292.55-53,213.70

Finding the Fourth Proportional to 80,948.10, 121,292.55 and 53,213.70

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Solution

The fourth proportional to 80,948.10, 121,292.55 and 53,213.70 is: 79,735.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,948.10 : 121,292.55 = 53,213.70 : x
  2. Step 2: Convert to fraction form
    80,948.10/121,292.55 = 53,213.70/x
  3. Step 3: Cross multiply
    80,948.10x = 121,292.55 × 53,213.70
  4. Step 4: Simplify right side
    80,948.10x = 6,454,425,367.94
  5. Step 5: Solve for x
    x = 6,454,425,367.94/80,948.10
  6. Step 6: Final answer
    x = 79,735.35

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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.