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Finding the Fourth Proportional to 91,186.78, 136,788 and 32,017.36

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Solution

The fourth proportional to 91,186.78, 136,788 and 32,017.36 is: 48,028.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,186.78 : 136,788 = 32,017.36 : x
  2. Step 2: Convert to fraction form
    91,186.78/136,788 = 32,017.36/x
  3. Step 3: Cross multiply
    91,186.78x = 136,788 × 32,017.36
  4. Step 4: Simplify right side
    91,186.78x = 4,379,590,639.68
  5. Step 5: Solve for x
    x = 4,379,590,639.68/91,186.78
  6. Step 6: Final answer
    x = 48,028.79

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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.