Home / 80,945,988.40-121,418,982.60-20,361,714.40

Finding the Fourth Proportional to 80,945,988.40, 121,418,982.60 and 20,361,714.40

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Solution

The fourth proportional to 80,945,988.40, 121,418,982.60 and 20,361,714.40 is: 30,542,571.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,945,988.40 : 121,418,982.60 = 20,361,714.40 : x
  2. Step 2: Convert to fraction form
    80,945,988.40/121,418,982.60 = 20,361,714.40/x
  3. Step 3: Cross multiply
    80,945,988.40x = 121,418,982.60 × 20,361,714.40
  4. Step 4: Simplify right side
    80,945,988.40x = 2,472,298,646,439,769
  5. Step 5: Solve for x
    x = 2,472,298,646,439,769/80,945,988.40
  6. Step 6: Final answer
    x = 30,542,571.60

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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.