Home / 87,898.26-121,311.36-49,665.72

Finding the Fourth Proportional to 87,898.26, 121,311.36 and 49,665.72

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Solution

The fourth proportional to 87,898.26, 121,311.36 and 49,665.72 is: 68,545.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,898.26 : 121,311.36 = 49,665.72 : x
  2. Step 2: Convert to fraction form
    87,898.26/121,311.36 = 49,665.72/x
  3. Step 3: Cross multiply
    87,898.26x = 121,311.36 × 49,665.72
  4. Step 4: Simplify right side
    87,898.26x = 6,025,016,038.58
  5. Step 5: Solve for x
    x = 6,025,016,038.58/87,898.26
  6. Step 6: Final answer
    x = 68,545.34

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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.