Home / 80,790.40-121,185.60-52,796.80

Finding the Fourth Proportional to 80,790.40, 121,185.60 and 52,796.80

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Solution

The fourth proportional to 80,790.40, 121,185.60 and 52,796.80 is: 79,195.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,790.40 : 121,185.60 = 52,796.80 : x
  2. Step 2: Convert to fraction form
    80,790.40/121,185.60 = 52,796.80/x
  3. Step 3: Cross multiply
    80,790.40x = 121,185.60 × 52,796.80
  4. Step 4: Simplify right side
    80,790.40x = 6,398,211,886.08
  5. Step 5: Solve for x
    x = 6,398,211,886.08/80,790.40
  6. Step 6: Final answer
    x = 79,195.20

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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.