Home / 80,853,711.20-121,285,815.60-42,589,959.20

Finding the Fourth Proportional to 80,853,711.20, 121,285,815.60 and 42,589,959.20

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Solution

The fourth proportional to 80,853,711.20, 121,285,815.60 and 42,589,959.20 is: 63,887,703.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,853,711.20 : 121,285,815.60 = 42,589,959.20 : x
  2. Step 2: Convert to fraction form
    80,853,711.20/121,285,815.60 = 42,589,959.20/x
  3. Step 3: Cross multiply
    80,853,711.20x = 121,285,815.60 × 42,589,959.20
  4. Step 4: Simplify right side
    80,853,711.20x = 5,165,557,937,942,724
  5. Step 5: Solve for x
    x = 5,165,557,937,942,724/80,853,711.20
  6. Step 6: Final answer
    x = 63,887,703.62

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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.