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Finding the Fourth Proportional to 91,395.84, 137,064.42 and 29,051.76

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Solution

The fourth proportional to 91,395.84, 137,064.42 and 29,051.76 is: 43,568.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,395.84 : 137,064.42 = 29,051.76 : x
  2. Step 2: Convert to fraction form
    91,395.84/137,064.42 = 29,051.76/x
  3. Step 3: Cross multiply
    91,395.84x = 137,064.42 × 29,051.76
  4. Step 4: Simplify right side
    91,395.84x = 3,981,962,634.38
  5. Step 5: Solve for x
    x = 3,981,962,634.38/91,395.84
  6. Step 6: Final answer
    x = 43,568.31

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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.