Home / 78,556.30-117,852.90-25,965.78

Finding the Fourth Proportional to 78,556.30, 117,852.90 and 25,965.78

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Solution

The fourth proportional to 78,556.30, 117,852.90 and 25,965.78 is: 38,954.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,556.30 : 117,852.90 = 25,965.78 : x
  2. Step 2: Convert to fraction form
    78,556.30/117,852.90 = 25,965.78/x
  3. Step 3: Cross multiply
    78,556.30x = 117,852.90 × 25,965.78
  4. Step 4: Simplify right side
    78,556.30x = 3,060,141,754.67
  5. Step 5: Solve for x
    x = 3,060,141,754.67/78,556.30
  6. Step 6: Final answer
    x = 38,954.76

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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.