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Finding the Fourth Proportional to 66,988, 100,482 and 27,566.56

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Solution

The fourth proportional to 66,988, 100,482 and 27,566.56 is: 41,349.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,988 : 100,482 = 27,566.56 : x
  2. Step 2: Convert to fraction form
    66,988/100,482 = 27,566.56/x
  3. Step 3: Cross multiply
    66,988x = 100,482 × 27,566.56
  4. Step 4: Simplify right side
    66,988x = 2,769,943,081.92
  5. Step 5: Solve for x
    x = 2,769,943,081.92/66,988
  6. Step 6: Final answer
    x = 41,349.84

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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.