Home / 87,731.64-121,064.22-49,497.21

Finding the Fourth Proportional to 87,731.64, 121,064.22 and 49,497.21

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Solution

The fourth proportional to 87,731.64, 121,064.22 and 49,497.21 is: 68,303.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,731.64 : 121,064.22 = 49,497.21 : x
  2. Step 2: Convert to fraction form
    87,731.64/121,064.22 = 49,497.21/x
  3. Step 3: Cross multiply
    87,731.64x = 121,064.22 × 49,497.21
  4. Step 4: Simplify right side
    87,731.64x = 5,992,341,120.83
  5. Step 5: Solve for x
    x = 5,992,341,120.83/87,731.64
  6. Step 6: Final answer
    x = 68,303.08

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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.