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Finding the Fourth Proportional to 91,209.33, 136,839.08 and 43,864.03

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Solution

The fourth proportional to 91,209.33, 136,839.08 and 43,864.03 is: 65,808.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,209.33 : 136,839.08 = 43,864.03 : x
  2. Step 2: Convert to fraction form
    91,209.33/136,839.08 = 43,864.03/x
  3. Step 3: Cross multiply
    91,209.33x = 136,839.08 × 43,864.03
  4. Step 4: Simplify right side
    91,209.33x = 6,002,313,497.41
  5. Step 5: Solve for x
    x = 6,002,313,497.41/91,209.33
  6. Step 6: Final answer
    x = 65,808.11

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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.