Home / 87,921.12-121,323.96-51,618.74

Finding the Fourth Proportional to 87,921.12, 121,323.96 and 51,618.74

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Solution

The fourth proportional to 87,921.12, 121,323.96 and 51,618.74 is: 71,229.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,921.12 : 121,323.96 = 51,618.74 : x
  2. Step 2: Convert to fraction form
    87,921.12/121,323.96 = 51,618.74/x
  3. Step 3: Cross multiply
    87,921.12x = 121,323.96 × 51,618.74
  4. Step 4: Simplify right side
    87,921.12x = 6,262,590,443.89
  5. Step 5: Solve for x
    x = 6,262,590,443.89/87,921.12
  6. Step 6: Final answer
    x = 71,229.65

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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.