Home / 80,853,856.70-121,286,033.85-42,590,104.70

Finding the Fourth Proportional to 80,853,856.70, 121,286,033.85 and 42,590,104.70

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Solution

The fourth proportional to 80,853,856.70, 121,286,033.85 and 42,590,104.70 is: 63,887,921.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,853,856.70 : 121,286,033.85 = 42,590,104.70 : x
  2. Step 2: Convert to fraction form
    80,853,856.70/121,286,033.85 = 42,590,104.70/x
  3. Step 3: Cross multiply
    80,853,856.70x = 121,286,033.85 × 42,590,104.70
  4. Step 4: Simplify right side
    80,853,856.70x = 5,165,584,880,319,244
  5. Step 5: Solve for x
    x = 5,165,584,880,319,244/80,853,856.70
  6. Step 6: Final answer
    x = 63,887,921.88

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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.