Home / 80,766.40-121,149.60-49,619.20

Finding the Fourth Proportional to 80,766.40, 121,149.60 and 49,619.20

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Solution

The fourth proportional to 80,766.40, 121,149.60 and 49,619.20 is: 74,428.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,766.40 : 121,149.60 = 49,619.20 : x
  2. Step 2: Convert to fraction form
    80,766.40/121,149.60 = 49,619.20/x
  3. Step 3: Cross multiply
    80,766.40x = 121,149.60 × 49,619.20
  4. Step 4: Simplify right side
    80,766.40x = 6,011,346,232.32
  5. Step 5: Solve for x
    x = 6,011,346,232.32/80,766.40
  6. Step 6: Final answer
    x = 74,428.80

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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.