Home / 80,758.40-121,209.60-47,436.80

Finding the Fourth Proportional to 80,758.40, 121,209.60 and 47,436.80

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Solution

The fourth proportional to 80,758.40, 121,209.60 and 47,436.80 is: 71,197.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,758.40 : 121,209.60 = 47,436.80 : x
  2. Step 2: Convert to fraction form
    80,758.40/121,209.60 = 47,436.80/x
  3. Step 3: Cross multiply
    80,758.40x = 121,209.60 × 47,436.80
  4. Step 4: Simplify right side
    80,758.40x = 5,749,795,553.28
  5. Step 5: Solve for x
    x = 5,749,795,553.28/80,758.40
  6. Step 6: Final answer
    x = 71,197.49

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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.