Home / 87,854.22-121,238.88-47,568

Finding the Fourth Proportional to 87,854.22, 121,238.88 and 47,568

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Solution

The fourth proportional to 87,854.22, 121,238.88 and 47,568 is: 65,643.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,854.22 : 121,238.88 = 47,568 : x
  2. Step 2: Convert to fraction form
    87,854.22/121,238.88 = 47,568/x
  3. Step 3: Cross multiply
    87,854.22x = 121,238.88 × 47,568
  4. Step 4: Simplify right side
    87,854.22x = 5,767,091,043.84
  5. Step 5: Solve for x
    x = 5,767,091,043.84/87,854.22
  6. Step 6: Final answer
    x = 65,643.87

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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.