Home / 78,240.22-117,376.67-25,645.57

Finding the Fourth Proportional to 78,240.22, 117,376.67 and 25,645.57

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Solution

The fourth proportional to 78,240.22, 117,376.67 and 25,645.57 is: 38,473.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,240.22 : 117,376.67 = 25,645.57 : x
  2. Step 2: Convert to fraction form
    78,240.22/117,376.67 = 25,645.57/x
  3. Step 3: Cross multiply
    78,240.22x = 117,376.67 × 25,645.57
  4. Step 4: Simplify right side
    78,240.22x = 3,010,191,606.85
  5. Step 5: Solve for x
    x = 3,010,191,606.85/78,240.22
  6. Step 6: Final answer
    x = 38,473.71

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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.