Home / 87,961.44-121,369.68-71,165.28

Finding the Fourth Proportional to 87,961.44, 121,369.68 and 71,165.28

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Solution

The fourth proportional to 87,961.44, 121,369.68 and 71,165.28 is: 98,194.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,961.44 : 121,369.68 = 71,165.28 : x
  2. Step 2: Convert to fraction form
    87,961.44/121,369.68 = 71,165.28/x
  3. Step 3: Cross multiply
    87,961.44x = 121,369.68 × 71,165.28
  4. Step 4: Simplify right side
    87,961.44x = 8,637,307,260.71
  5. Step 5: Solve for x
    x = 8,637,307,260.71/87,961.44
  6. Step 6: Final answer
    x = 98,194.25

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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.