Home / 87,716.50-121,039.40-51,908.02

Finding the Fourth Proportional to 87,716.50, 121,039.40 and 51,908.02

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Solution

The fourth proportional to 87,716.50, 121,039.40 and 51,908.02 is: 71,627.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,716.50 : 121,039.40 = 51,908.02 : x
  2. Step 2: Convert to fraction form
    87,716.50/121,039.40 = 51,908.02/x
  3. Step 3: Cross multiply
    87,716.50x = 121,039.40 × 51,908.02
  4. Step 4: Simplify right side
    87,716.50x = 6,282,915,595.99
  5. Step 5: Solve for x
    x = 6,282,915,595.99/87,716.50
  6. Step 6: Final answer
    x = 71,627.52

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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.