Home / 80,906.40-121,359.60-52,912.80

Finding the Fourth Proportional to 80,906.40, 121,359.60 and 52,912.80

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Solution

The fourth proportional to 80,906.40, 121,359.60 and 52,912.80 is: 79,369.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,906.40 : 121,359.60 = 52,912.80 : x
  2. Step 2: Convert to fraction form
    80,906.40/121,359.60 = 52,912.80/x
  3. Step 3: Cross multiply
    80,906.40x = 121,359.60 × 52,912.80
  4. Step 4: Simplify right side
    80,906.40x = 6,421,476,242.88
  5. Step 5: Solve for x
    x = 6,421,476,242.88/80,906.40
  6. Step 6: Final answer
    x = 79,369.20

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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.