Home / 87,928.16-121,340.68-47,642.94

Finding the Fourth Proportional to 87,928.16, 121,340.68 and 47,642.94

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Solution

The fourth proportional to 87,928.16, 121,340.68 and 47,642.94 is: 65,747.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,928.16 : 121,340.68 = 47,642.94 : x
  2. Step 2: Convert to fraction form
    87,928.16/121,340.68 = 47,642.94/x
  3. Step 3: Cross multiply
    87,928.16x = 121,340.68 × 47,642.94
  4. Step 4: Simplify right side
    87,928.16x = 5,781,026,736.80
  5. Step 5: Solve for x
    x = 5,781,026,736.80/87,928.16
  6. Step 6: Final answer
    x = 65,747.16

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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.