Home / 80,986,387.80-121,479,581.70-74,750,813.40

Finding the Fourth Proportional to 80,986,387.80, 121,479,581.70 and 74,750,813.40

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Solution

The fourth proportional to 80,986,387.80, 121,479,581.70 and 74,750,813.40 is: 112,126,220.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,986,387.80 : 121,479,581.70 = 74,750,813.40 : x
  2. Step 2: Convert to fraction form
    80,986,387.80/121,479,581.70 = 74,750,813.40/x
  3. Step 3: Cross multiply
    80,986,387.80x = 121,479,581.70 × 74,750,813.40
  4. Step 4: Simplify right side
    80,986,387.80x = 9,080,697,543,566,756
  5. Step 5: Solve for x
    x = 9,080,697,543,566,756/80,986,387.80
  6. Step 6: Final answer
    x = 112,126,220.10

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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.