Home / 53,131.72-79,699.78-15,691.80

Finding the Fourth Proportional to 53,131.72, 79,699.78 and 15,691.80

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Solution

The fourth proportional to 53,131.72, 79,699.78 and 15,691.80 is: 23,538.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,131.72 : 79,699.78 = 15,691.80 : x
  2. Step 2: Convert to fraction form
    53,131.72/79,699.78 = 15,691.80/x
  3. Step 3: Cross multiply
    53,131.72x = 79,699.78 × 15,691.80
  4. Step 4: Simplify right side
    53,131.72x = 1,250,633,007.80
  5. Step 5: Solve for x
    x = 1,250,633,007.80/53,131.72
  6. Step 6: Final answer
    x = 23,538.35

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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.