Home / 87,908.36-121,314.12-47,622.12

Finding the Fourth Proportional to 87,908.36, 121,314.12 and 47,622.12

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Solution

The fourth proportional to 87,908.36, 121,314.12 and 47,622.12 is: 65,718.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,908.36 : 121,314.12 = 47,622.12 : x
  2. Step 2: Convert to fraction form
    87,908.36/121,314.12 = 47,622.12/x
  3. Step 3: Cross multiply
    87,908.36x = 121,314.12 × 47,622.12
  4. Step 4: Simplify right side
    87,908.36x = 5,777,235,580.33
  5. Step 5: Solve for x
    x = 5,777,235,580.33/87,908.36
  6. Step 6: Final answer
    x = 65,718.85

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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.