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Finding the Fourth Proportional to 78,729.60, 118,058.86 and 22,556.86

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Solution

The fourth proportional to 78,729.60, 118,058.86 and 22,556.86 is: 33,825.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,729.60 : 118,058.86 = 22,556.86 : x
  2. Step 2: Convert to fraction form
    78,729.60/118,058.86 = 22,556.86/x
  3. Step 3: Cross multiply
    78,729.60x = 118,058.86 × 22,556.86
  4. Step 4: Simplify right side
    78,729.60x = 2,663,036,825.24
  5. Step 5: Solve for x
    x = 2,663,036,825.24/78,729.60
  6. Step 6: Final answer
    x = 33,825.10

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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.