Home / 80,930,334.80-121,395,502.20-72,427,278.80

Finding the Fourth Proportional to 80,930,334.80, 121,395,502.20 and 72,427,278.80

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Solution

The fourth proportional to 80,930,334.80, 121,395,502.20 and 72,427,278.80 is: 108,640,918.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,930,334.80 : 121,395,502.20 = 72,427,278.80 : x
  2. Step 2: Convert to fraction form
    80,930,334.80/121,395,502.20 = 72,427,278.80/x
  3. Step 3: Cross multiply
    80,930,334.80x = 121,395,502.20 × 72,427,278.80
  4. Step 4: Simplify right side
    80,930,334.80x = 8,792,345,882,905,413
  5. Step 5: Solve for x
    x = 8,792,345,882,905,413/80,930,334.80
  6. Step 6: Final answer
    x = 108,640,918.20

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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.