Home / 87,486.84-120,734.10-49,247.76

Finding the Fourth Proportional to 87,486.84, 120,734.10 and 49,247.76

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Solution

The fourth proportional to 87,486.84, 120,734.10 and 49,247.76 is: 67,963.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,486.84 : 120,734.10 = 49,247.76 : x
  2. Step 2: Convert to fraction form
    87,486.84/120,734.10 = 49,247.76/x
  3. Step 3: Cross multiply
    87,486.84x = 120,734.10 × 49,247.76
  4. Step 4: Simplify right side
    87,486.84x = 5,945,883,376.95
  5. Step 5: Solve for x
    x = 5,945,883,376.95/87,486.84
  6. Step 6: Final answer
    x = 67,963.17

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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.