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Finding the Fourth Proportional to 53,168.63, 79,766.78 and 19,891.29

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Solution

The fourth proportional to 53,168.63, 79,766.78 and 19,891.29 is: 29,842.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,168.63 : 79,766.78 = 19,891.29 : x
  2. Step 2: Convert to fraction form
    53,168.63/79,766.78 = 19,891.29/x
  3. Step 3: Cross multiply
    53,168.63x = 79,766.78 × 19,891.29
  4. Step 4: Simplify right side
    53,168.63x = 1,586,664,053.89
  5. Step 5: Solve for x
    x = 1,586,664,053.89/53,168.63
  6. Step 6: Final answer
    x = 29,842.11

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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.