Home / 66,390.45-91,618.82-36,175.78

Finding the Fourth Proportional to 66,390.45, 91,618.82 and 36,175.78

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Solution

The fourth proportional to 66,390.45, 91,618.82 and 36,175.78 is: 49,922.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,390.45 : 91,618.82 = 36,175.78 : x
  2. Step 2: Convert to fraction form
    66,390.45/91,618.82 = 36,175.78/x
  3. Step 3: Cross multiply
    66,390.45x = 91,618.82 × 36,175.78
  4. Step 4: Simplify right side
    66,390.45x = 3,314,382,060.71
  5. Step 5: Solve for x
    x = 3,314,382,060.71/66,390.45
  6. Step 6: Final answer
    x = 49,922.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.