Home / 66,391.12-91,618.92-36,175.66

Finding the Fourth Proportional to 66,391.12, 91,618.92 and 36,175.66

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Solution

The fourth proportional to 66,391.12, 91,618.92 and 36,175.66 is: 49,921.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,391.12 : 91,618.92 = 36,175.66 : x
  2. Step 2: Convert to fraction form
    66,391.12/91,618.92 = 36,175.66/x
  3. Step 3: Cross multiply
    66,391.12x = 91,618.92 × 36,175.66
  4. Step 4: Simplify right side
    66,391.12x = 3,314,374,899.49
  5. Step 5: Solve for x
    x = 3,314,374,899.49/66,391.12
  6. Step 6: Final answer
    x = 49,921.96

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1.5x scale

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.