Home / 80,454,877.65-120,682,316.48-72,392,720.85

Finding the Fourth Proportional to 80,454,877.65, 120,682,316.48 and 72,392,720.85

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Solution

The fourth proportional to 80,454,877.65, 120,682,316.48 and 72,392,720.85 is: 108,589,081.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,454,877.65 : 120,682,316.48 = 72,392,720.85 : x
  2. Step 2: Convert to fraction form
    80,454,877.65/120,682,316.48 = 72,392,720.85/x
  3. Step 3: Cross multiply
    80,454,877.65x = 120,682,316.48 × 72,392,720.85
  4. Step 4: Simplify right side
    80,454,877.65x = 8,736,521,248,106,030
  5. Step 5: Solve for x
    x = 8,736,521,248,106,030/80,454,877.65
  6. Step 6: Final answer
    x = 108,589,081.28

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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.