Home / 78,236.16-117,353.76-25,645.26

Finding the Fourth Proportional to 78,236.16, 117,353.76 and 25,645.26

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Solution

The fourth proportional to 78,236.16, 117,353.76 and 25,645.26 is: 38,467.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,236.16 : 117,353.76 = 25,645.26 : x
  2. Step 2: Convert to fraction form
    78,236.16/117,353.76 = 25,645.26/x
  3. Step 3: Cross multiply
    78,236.16x = 117,353.76 × 25,645.26
  4. Step 4: Simplify right side
    78,236.16x = 3,009,567,687.18
  5. Step 5: Solve for x
    x = 3,009,567,687.18/78,236.16
  6. Step 6: Final answer
    x = 38,467.73

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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.