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Finding the Fourth Proportional to 91,138.66, 136,614.17 and 34,963.81

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Solution

The fourth proportional to 91,138.66, 136,614.17 and 34,963.81 is: 52,409.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,138.66 : 136,614.17 = 34,963.81 : x
  2. Step 2: Convert to fraction form
    91,138.66/136,614.17 = 34,963.81/x
  3. Step 3: Cross multiply
    91,138.66x = 136,614.17 × 34,963.81
  4. Step 4: Simplify right side
    91,138.66x = 4,776,551,708.37
  5. Step 5: Solve for x
    x = 4,776,551,708.37/91,138.66
  6. Step 6: Final answer
    x = 52,409.72

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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.