Home / 87,742.22-121,084.29-49,509.89

Finding the Fourth Proportional to 87,742.22, 121,084.29 and 49,509.89

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Solution

The fourth proportional to 87,742.22, 121,084.29 and 49,509.89 is: 68,323.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,742.22 : 121,084.29 = 49,509.89 : x
  2. Step 2: Convert to fraction form
    87,742.22/121,084.29 = 49,509.89/x
  3. Step 3: Cross multiply
    87,742.22x = 121,084.29 × 49,509.89
  4. Step 4: Simplify right side
    87,742.22x = 5,994,869,025.66
  5. Step 5: Solve for x
    x = 5,994,869,025.66/87,742.22
  6. Step 6: Final answer
    x = 68,323.65

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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.