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Finding the Fourth Proportional to 80,573.20, 120,744.60 and 55,920.40

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Solution

The fourth proportional to 80,573.20, 120,744.60 and 55,920.40 is: 83,800.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,573.20 : 120,744.60 = 55,920.40 : x
  2. Step 2: Convert to fraction form
    80,573.20/120,744.60 = 55,920.40/x
  3. Step 3: Cross multiply
    80,573.20x = 120,744.60 × 55,920.40
  4. Step 4: Simplify right side
    80,573.20x = 6,752,086,329.84
  5. Step 5: Solve for x
    x = 6,752,086,329.84/80,573.20
  6. Step 6: Final answer
    x = 83,800.65

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1.5x scale

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.