Home / 85,991.27-128,855.40-36,044.14

Finding the Fourth Proportional to 85,991.27, 128,855.40 and 36,044.14

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Solution

The fourth proportional to 85,991.27, 128,855.40 and 36,044.14 is: 54,011.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,991.27 : 128,855.40 = 36,044.14 : x
  2. Step 2: Convert to fraction form
    85,991.27/128,855.40 = 36,044.14/x
  3. Step 3: Cross multiply
    85,991.27x = 128,855.40 × 36,044.14
  4. Step 4: Simplify right side
    85,991.27x = 4,644,481,963.03
  5. Step 5: Solve for x
    x = 4,644,481,963.03/85,991.27
  6. Step 6: Final answer
    x = 54,011.09

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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.