Home / 87,974.16-121,401.09-47,687.05

Finding the Fourth Proportional to 87,974.16, 121,401.09 and 47,687.05

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Solution

The fourth proportional to 87,974.16, 121,401.09 and 47,687.05 is: 65,806.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,974.16 : 121,401.09 = 47,687.05 : x
  2. Step 2: Convert to fraction form
    87,974.16/121,401.09 = 47,687.05/x
  3. Step 3: Cross multiply
    87,974.16x = 121,401.09 × 47,687.05
  4. Step 4: Simplify right side
    87,974.16x = 5,789,259,848.88
  5. Step 5: Solve for x
    x = 5,789,259,848.88/87,974.16
  6. Step 6: Final answer
    x = 65,806.37

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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.