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Finding the Fourth Proportional to 91,074.84, 136,628.72 and 41,178.44

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Solution

The fourth proportional to 91,074.84, 136,628.72 and 41,178.44 is: 61,775.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,074.84 : 136,628.72 = 41,178.44 : x
  2. Step 2: Convert to fraction form
    91,074.84/136,628.72 = 41,178.44/x
  3. Step 3: Cross multiply
    91,074.84x = 136,628.72 × 41,178.44
  4. Step 4: Simplify right side
    91,074.84x = 5,626,156,659.76
  5. Step 5: Solve for x
    x = 5,626,156,659.76/91,074.84
  6. Step 6: Final answer
    x = 61,775.09

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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.