Home / 87,621.89-120,918.06-49,896.14

Finding the Fourth Proportional to 87,621.89, 120,918.06 and 49,896.14

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Solution

The fourth proportional to 87,621.89, 120,918.06 and 49,896.14 is: 68,856.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,621.89 : 120,918.06 = 49,896.14 : x
  2. Step 2: Convert to fraction form
    87,621.89/120,918.06 = 49,896.14/x
  3. Step 3: Cross multiply
    87,621.89x = 120,918.06 × 49,896.14
  4. Step 4: Simplify right side
    87,621.89x = 6,033,343,845.70
  5. Step 5: Solve for x
    x = 6,033,343,845.70/87,621.89
  6. Step 6: Final answer
    x = 68,856.59

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1.5x scale

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.