Home / 87,818.11-121,189.37-49,579.32

Finding the Fourth Proportional to 87,818.11, 121,189.37 and 49,579.32

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Solution

The fourth proportional to 87,818.11, 121,189.37 and 49,579.32 is: 68,419.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,818.11 : 121,189.37 = 49,579.32 : x
  2. Step 2: Convert to fraction form
    87,818.11/121,189.37 = 49,579.32/x
  3. Step 3: Cross multiply
    87,818.11x = 121,189.37 × 49,579.32
  4. Step 4: Simplify right side
    87,818.11x = 6,008,486,762.39
  5. Step 5: Solve for x
    x = 6,008,486,762.39/87,818.11
  6. Step 6: Final answer
    x = 68,419.68

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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.