Home / 78,359.14-117,513.78-25,756.48

Finding the Fourth Proportional to 78,359.14, 117,513.78 and 25,756.48

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Solution

The fourth proportional to 78,359.14, 117,513.78 and 25,756.48 is: 38,626.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,359.14 : 117,513.78 = 25,756.48 : x
  2. Step 2: Convert to fraction form
    78,359.14/117,513.78 = 25,756.48/x
  3. Step 3: Cross multiply
    78,359.14x = 117,513.78 × 25,756.48
  4. Step 4: Simplify right side
    78,359.14x = 3,026,741,324.29
  5. Step 5: Solve for x
    x = 3,026,741,324.29/78,359.14
  6. Step 6: Final answer
    x = 38,626.53

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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.