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Finding the Fourth Proportional to 53,806.89, 80,723.28 and 16,870.89

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Solution

The fourth proportional to 53,806.89, 80,723.28 and 16,870.89 is: 25,310.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,806.89 : 80,723.28 = 16,870.89 : x
  2. Step 2: Convert to fraction form
    53,806.89/80,723.28 = 16,870.89/x
  3. Step 3: Cross multiply
    53,806.89x = 80,723.28 × 16,870.89
  4. Step 4: Simplify right side
    53,806.89x = 1,361,873,577.32
  5. Step 5: Solve for x
    x = 1,361,873,577.32/53,806.89
  6. Step 6: Final answer
    x = 25,310.39

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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.