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Finding the Fourth Proportional to 91,134.72, 136,716.66 and 38,544.66

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Solution

The fourth proportional to 91,134.72, 136,716.66 and 38,544.66 is: 57,823.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,134.72 : 136,716.66 = 38,544.66 : x
  2. Step 2: Convert to fraction form
    91,134.72/136,716.66 = 38,544.66/x
  3. Step 3: Cross multiply
    91,134.72x = 136,716.66 × 38,544.66
  4. Step 4: Simplify right side
    91,134.72x = 5,269,697,176.04
  5. Step 5: Solve for x
    x = 5,269,697,176.04/91,134.72
  6. Step 6: Final answer
    x = 57,823.16

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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.