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Finding the Fourth Proportional to 53,136.78, 79,713.06 and 33,129.98

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Solution

The fourth proportional to 53,136.78, 79,713.06 and 33,129.98 is: 49,699.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,136.78 : 79,713.06 = 33,129.98 : x
  2. Step 2: Convert to fraction form
    53,136.78/79,713.06 = 33,129.98/x
  3. Step 3: Cross multiply
    53,136.78x = 79,713.06 × 33,129.98
  4. Step 4: Simplify right side
    53,136.78x = 2,640,892,083.54
  5. Step 5: Solve for x
    x = 2,640,892,083.54/53,136.78
  6. Step 6: Final answer
    x = 49,699.89

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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.