Home / 78,556.11-117,852.61-25,965.59

Finding the Fourth Proportional to 78,556.11, 117,852.61 and 25,965.59

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Solution

The fourth proportional to 78,556.11, 117,852.61 and 25,965.59 is: 38,954.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,556.11 : 117,852.61 = 25,965.59 : x
  2. Step 2: Convert to fraction form
    78,556.11/117,852.61 = 25,965.59/x
  3. Step 3: Cross multiply
    78,556.11x = 117,852.61 × 25,965.59
  4. Step 4: Simplify right side
    78,556.11x = 3,060,111,962.43
  5. Step 5: Solve for x
    x = 3,060,111,962.43/78,556.11
  6. Step 6: Final answer
    x = 38,954.47

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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.