Home / 80,856.30-121,284.45-51,404.70

Finding the Fourth Proportional to 80,856.30, 121,284.45 and 51,404.70

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Solution

The fourth proportional to 80,856.30, 121,284.45 and 51,404.70 is: 77,107.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,856.30 : 121,284.45 = 51,404.70 : x
  2. Step 2: Convert to fraction form
    80,856.30/121,284.45 = 51,404.70/x
  3. Step 3: Cross multiply
    80,856.30x = 121,284.45 × 51,404.70
  4. Step 4: Simplify right side
    80,856.30x = 6,234,590,766.92
  5. Step 5: Solve for x
    x = 6,234,590,766.92/80,856.30
  6. Step 6: Final answer
    x = 77,107.05

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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.