Home / 87,713.28-121,041.92-47,969.28

Finding the Fourth Proportional to 87,713.28, 121,041.92 and 47,969.28

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Solution

The fourth proportional to 87,713.28, 121,041.92 and 47,969.28 is: 66,196.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,713.28 : 121,041.92 = 47,969.28 : x
  2. Step 2: Convert to fraction form
    87,713.28/121,041.92 = 47,969.28/x
  3. Step 3: Cross multiply
    87,713.28x = 121,041.92 × 47,969.28
  4. Step 4: Simplify right side
    87,713.28x = 5,806,293,752.22
  5. Step 5: Solve for x
    x = 5,806,293,752.22/87,713.28
  6. Step 6: Final answer
    x = 66,196.29

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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.