Home / 80,745,947.20-120,974,578.80-49,139,423.20

Finding the Fourth Proportional to 80,745,947.20, 120,974,578.80 and 49,139,423.20

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Solution

The fourth proportional to 80,745,947.20, 120,974,578.80 and 49,139,423.20 is: 73,621,292.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,745,947.20 : 120,974,578.80 = 49,139,423.20 : x
  2. Step 2: Convert to fraction form
    80,745,947.20/120,974,578.80 = 49,139,423.20/x
  3. Step 3: Cross multiply
    80,745,947.20x = 120,974,578.80 × 49,139,423.20
  4. Step 4: Simplify right side
    80,745,947.20x = 5,944,621,024,094,948
  5. Step 5: Solve for x
    x = 5,944,621,024,094,948/80,745,947.20
  6. Step 6: Final answer
    x = 73,621,292.84

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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.