Home / 78,230.16-117,344.76-25,639.26

Finding the Fourth Proportional to 78,230.16, 117,344.76 and 25,639.26

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Solution

The fourth proportional to 78,230.16, 117,344.76 and 25,639.26 is: 38,458.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,230.16 : 117,344.76 = 25,639.26 : x
  2. Step 2: Convert to fraction form
    78,230.16/117,344.76 = 25,639.26/x
  3. Step 3: Cross multiply
    78,230.16x = 117,344.76 × 25,639.26
  4. Step 4: Simplify right side
    78,230.16x = 3,008,632,811.28
  5. Step 5: Solve for x
    x = 3,008,632,811.28/78,230.16
  6. Step 6: Final answer
    x = 38,458.73

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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.