Home / 87,688.89-121,022.52-49,456.29

Finding the Fourth Proportional to 87,688.89, 121,022.52 and 49,456.29

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Solution

The fourth proportional to 87,688.89, 121,022.52 and 49,456.29 is: 68,256.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,688.89 : 121,022.52 = 49,456.29 : x
  2. Step 2: Convert to fraction form
    87,688.89/121,022.52 = 49,456.29/x
  3. Step 3: Cross multiply
    87,688.89x = 121,022.52 × 49,456.29
  4. Step 4: Simplify right side
    87,688.89x = 5,985,324,845.65
  5. Step 5: Solve for x
    x = 5,985,324,845.65/87,688.89
  6. Step 6: Final answer
    x = 68,256.36

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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.