Home / 78,061.08-117,110.32-25,470.68

Finding the Fourth Proportional to 78,061.08, 117,110.32 and 25,470.68

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Solution

The fourth proportional to 78,061.08, 117,110.32 and 25,470.68 is: 38,212.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,061.08 : 117,110.32 = 25,470.68 : x
  2. Step 2: Convert to fraction form
    78,061.08/117,110.32 = 25,470.68/x
  3. Step 3: Cross multiply
    78,061.08x = 117,110.32 × 25,470.68
  4. Step 4: Simplify right side
    78,061.08x = 2,982,879,485.42
  5. Step 5: Solve for x
    x = 2,982,879,485.42/78,061.08
  6. Step 6: Final answer
    x = 38,212.12

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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.