Home / 78,433.36-117,668.49-25,842.84

Finding the Fourth Proportional to 78,433.36, 117,668.49 and 25,842.84

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Solution

The fourth proportional to 78,433.36, 117,668.49 and 25,842.84 is: 38,770.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,433.36 : 117,668.49 = 25,842.84 : x
  2. Step 2: Convert to fraction form
    78,433.36/117,668.49 = 25,842.84/x
  3. Step 3: Cross multiply
    78,433.36x = 117,668.49 × 25,842.84
  4. Step 4: Simplify right side
    78,433.36x = 3,040,888,498.28
  5. Step 5: Solve for x
    x = 3,040,888,498.28/78,433.36
  6. Step 6: Final answer
    x = 38,770.35

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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.