Home / 78,363.16-117,519.78-25,760.52

Finding the Fourth Proportional to 78,363.16, 117,519.78 and 25,760.52

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Solution

The fourth proportional to 78,363.16, 117,519.78 and 25,760.52 is: 38,632.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,363.16 : 117,519.78 = 25,760.52 : x
  2. Step 2: Convert to fraction form
    78,363.16/117,519.78 = 25,760.52/x
  3. Step 3: Cross multiply
    78,363.16x = 117,519.78 × 25,760.52
  4. Step 4: Simplify right side
    78,363.16x = 3,027,370,643.09
  5. Step 5: Solve for x
    x = 3,027,370,643.09/78,363.16
  6. Step 6: Final answer
    x = 38,632.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.