Home / 87,914.39-121,321.71-47,629.17

Finding the Fourth Proportional to 87,914.39, 121,321.71 and 47,629.17

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Solution

The fourth proportional to 87,914.39, 121,321.71 and 47,629.17 is: 65,728.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,914.39 : 121,321.71 = 47,629.17 : x
  2. Step 2: Convert to fraction form
    87,914.39/121,321.71 = 47,629.17/x
  3. Step 3: Cross multiply
    87,914.39x = 121,321.71 × 47,629.17
  4. Step 4: Simplify right side
    87,914.39x = 5,778,452,350.28
  5. Step 5: Solve for x
    x = 5,778,452,350.28/87,914.39
  6. Step 6: Final answer
    x = 65,728.18

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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.