Home / 78,556.17-117,852.71-25,965.65

Finding the Fourth Proportional to 78,556.17, 117,852.71 and 25,965.65

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Solution

The fourth proportional to 78,556.17, 117,852.71 and 25,965.65 is: 38,954.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,556.17 : 117,852.71 = 25,965.65 : x
  2. Step 2: Convert to fraction form
    78,556.17/117,852.71 = 25,965.65/x
  3. Step 3: Cross multiply
    78,556.17x = 117,852.71 × 25,965.65
  4. Step 4: Simplify right side
    78,556.17x = 3,060,122,384.22
  5. Step 5: Solve for x
    x = 3,060,122,384.22/78,556.17
  6. Step 6: Final answer
    x = 38,954.58

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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.