Home / 78,564.92-117,865.84-25,974.42

Finding the Fourth Proportional to 78,564.92, 117,865.84 and 25,974.42

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Solution

The fourth proportional to 78,564.92, 117,865.84 and 25,974.42 is: 38,967.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,564.92 : 117,865.84 = 25,974.42 : x
  2. Step 2: Convert to fraction form
    78,564.92/117,865.84 = 25,974.42/x
  3. Step 3: Cross multiply
    78,564.92x = 117,865.84 × 25,974.42
  4. Step 4: Simplify right side
    78,564.92x = 3,061,496,831.81
  5. Step 5: Solve for x
    x = 3,061,496,831.81/78,564.92
  6. Step 6: Final answer
    x = 38,967.73

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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.