Home / 80,853,619.20-121,285,677.60-42,589,867.20

Finding the Fourth Proportional to 80,853,619.20, 121,285,677.60 and 42,589,867.20

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Solution

The fourth proportional to 80,853,619.20, 121,285,677.60 and 42,589,867.20 is: 63,887,565.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,853,619.20 : 121,285,677.60 = 42,589,867.20 : x
  2. Step 2: Convert to fraction form
    80,853,619.20/121,285,677.60 = 42,589,867.20/x
  3. Step 3: Cross multiply
    80,853,619.20x = 121,285,677.60 × 42,589,867.20
  4. Step 4: Simplify right side
    80,853,619.20x = 5,165,540,902,246,015
  5. Step 5: Solve for x
    x = 5,165,540,902,246,015/80,853,619.20
  6. Step 6: Final answer
    x = 63,887,565.62

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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.