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Finding the Fourth Proportional to 30,556.80, 45,835.20 and 26,863.20

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Solution

The fourth proportional to 30,556.80, 45,835.20 and 26,863.20 is: 40,294.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,556.80 : 45,835.20 = 26,863.20 : x
  2. Step 2: Convert to fraction form
    30,556.80/45,835.20 = 26,863.20/x
  3. Step 3: Cross multiply
    30,556.80x = 45,835.20 × 26,863.20
  4. Step 4: Simplify right side
    30,556.80x = 1,231,280,144.64
  5. Step 5: Solve for x
    x = 1,231,280,144.64/30,556.80
  6. Step 6: Final answer
    x = 40,294.80

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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.