Home / 87,739.18-121,094.96-49,509.57

Finding the Fourth Proportional to 87,739.18, 121,094.96 and 49,509.57

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Solution

The fourth proportional to 87,739.18, 121,094.96 and 49,509.57 is: 68,331.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,739.18 : 121,094.96 = 49,509.57 : x
  2. Step 2: Convert to fraction form
    87,739.18/121,094.96 = 49,509.57/x
  3. Step 3: Cross multiply
    87,739.18x = 121,094.96 × 49,509.57
  4. Step 4: Simplify right side
    87,739.18x = 5,995,359,398.77
  5. Step 5: Solve for x
    x = 5,995,359,398.77/87,739.18
  6. Step 6: Final answer
    x = 68,331.61

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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.