Home / 87,309.12-120,486.60-49,583.28

Finding the Fourth Proportional to 87,309.12, 120,486.60 and 49,583.28

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Solution

The fourth proportional to 87,309.12, 120,486.60 and 49,583.28 is: 68,424.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,309.12 : 120,486.60 = 49,583.28 : x
  2. Step 2: Convert to fraction form
    87,309.12/120,486.60 = 49,583.28/x
  3. Step 3: Cross multiply
    87,309.12x = 120,486.60 × 49,583.28
  4. Step 4: Simplify right side
    87,309.12x = 5,974,120,824.05
  5. Step 5: Solve for x
    x = 5,974,120,824.05/87,309.12
  6. Step 6: Final answer
    x = 68,424.93

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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.