Home / 80,853,856.20-121,286,033.10-42,590,104.20

Finding the Fourth Proportional to 80,853,856.20, 121,286,033.10 and 42,590,104.20

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Solution

The fourth proportional to 80,853,856.20, 121,286,033.10 and 42,590,104.20 is: 63,887,921.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,853,856.20 : 121,286,033.10 = 42,590,104.20 : x
  2. Step 2: Convert to fraction form
    80,853,856.20/121,286,033.10 = 42,590,104.20/x
  3. Step 3: Cross multiply
    80,853,856.20x = 121,286,033.10 × 42,590,104.20
  4. Step 4: Simplify right side
    80,853,856.20x = 5,165,584,787,733,649
  5. Step 5: Solve for x
    x = 5,165,584,787,733,649/80,853,856.20
  6. Step 6: Final answer
    x = 63,887,921.13

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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.