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Finding the Fourth Proportional to 53,469.30, 80,211.15 and 18,419.70

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Solution

The fourth proportional to 53,469.30, 80,211.15 and 18,419.70 is: 27,632.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,469.30 : 80,211.15 = 18,419.70 : x
  2. Step 2: Convert to fraction form
    53,469.30/80,211.15 = 18,419.70/x
  3. Step 3: Cross multiply
    53,469.30x = 80,211.15 × 18,419.70
  4. Step 4: Simplify right side
    53,469.30x = 1,477,465,319.66
  5. Step 5: Solve for x
    x = 1,477,465,319.66/53,469.30
  6. Step 6: Final answer
    x = 27,632.03

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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.