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Finding the Fourth Proportional to 53,131.22, 79,699.03 and 15,691.30

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Solution

The fourth proportional to 53,131.22, 79,699.03 and 15,691.30 is: 23,537.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,131.22 : 79,699.03 = 15,691.30 : x
  2. Step 2: Convert to fraction form
    53,131.22/79,699.03 = 15,691.30/x
  3. Step 3: Cross multiply
    53,131.22x = 79,699.03 × 15,691.30
  4. Step 4: Simplify right side
    53,131.22x = 1,250,581,389.44
  5. Step 5: Solve for x
    x = 1,250,581,389.44/53,131.22
  6. Step 6: Final answer
    x = 23,537.60

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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.