Home / 87,511.24-120,764.46-49,785.40

Finding the Fourth Proportional to 87,511.24, 120,764.46 and 49,785.40

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Solution

The fourth proportional to 87,511.24, 120,764.46 and 49,785.40 is: 68,703.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,511.24 : 120,764.46 = 49,785.40 : x
  2. Step 2: Convert to fraction form
    87,511.24/120,764.46 = 49,785.40/x
  3. Step 3: Cross multiply
    87,511.24x = 120,764.46 × 49,785.40
  4. Step 4: Simplify right side
    87,511.24x = 6,012,306,946.88
  5. Step 5: Solve for x
    x = 6,012,306,946.88/87,511.24
  6. Step 6: Final answer
    x = 68,703.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.