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Finding the Fourth Proportional to 40,999.88, 61,499.82 and 13,297.88

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Solution

The fourth proportional to 40,999.88, 61,499.82 and 13,297.88 is: 19,946.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,999.88 : 61,499.82 = 13,297.88 : x
  2. Step 2: Convert to fraction form
    40,999.88/61,499.82 = 13,297.88/x
  3. Step 3: Cross multiply
    40,999.88x = 61,499.82 × 13,297.88
  4. Step 4: Simplify right side
    40,999.88x = 817,816,918.88
  5. Step 5: Solve for x
    x = 817,816,918.88/40,999.88
  6. Step 6: Final answer
    x = 19,946.81

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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.