Home / 78,556.81-117,853.67-25,966.29

Finding the Fourth Proportional to 78,556.81, 117,853.67 and 25,966.29

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Solution

The fourth proportional to 78,556.81, 117,853.67 and 25,966.29 is: 38,955.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,556.81 : 117,853.67 = 25,966.29 : x
  2. Step 2: Convert to fraction form
    78,556.81/117,853.67 = 25,966.29/x
  3. Step 3: Cross multiply
    78,556.81x = 117,853.67 × 25,966.29
  4. Step 4: Simplify right side
    78,556.81x = 3,060,222,442.95
  5. Step 5: Solve for x
    x = 3,060,222,442.95/78,556.81
  6. Step 6: Final answer
    x = 38,955.54

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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.