Home / 78,716.18-118,081.37-25,409.43

Finding the Fourth Proportional to 78,716.18, 118,081.37 and 25,409.43

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Solution

The fourth proportional to 78,716.18, 118,081.37 and 25,409.43 is: 38,116.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,716.18 : 118,081.37 = 25,409.43 : x
  2. Step 2: Convert to fraction form
    78,716.18/118,081.37 = 25,409.43/x
  3. Step 3: Cross multiply
    78,716.18x = 118,081.37 × 25,409.43
  4. Step 4: Simplify right side
    78,716.18x = 3,000,379,735.47
  5. Step 5: Solve for x
    x = 3,000,379,735.47/78,716.18
  6. Step 6: Final answer
    x = 38,116.43

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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.