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Finding the Fourth Proportional to 53,808.83, 80,713.65 and 18,748.43

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Solution

The fourth proportional to 53,808.83, 80,713.65 and 18,748.43 is: 28,122.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,808.83 : 80,713.65 = 18,748.43 : x
  2. Step 2: Convert to fraction form
    53,808.83/80,713.65 = 18,748.43/x
  3. Step 3: Cross multiply
    53,808.83x = 80,713.65 × 18,748.43
  4. Step 4: Simplify right side
    53,808.83x = 1,513,254,217.07
  5. Step 5: Solve for x
    x = 1,513,254,217.07/53,808.83
  6. Step 6: Final answer
    x = 28,122.79

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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.