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Finding the Fourth Proportional to 66,305.94, 91,494.08 and 39,449.58

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Solution

The fourth proportional to 66,305.94, 91,494.08 and 39,449.58 is: 54,435.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,305.94 : 91,494.08 = 39,449.58 : x
  2. Step 2: Convert to fraction form
    66,305.94/91,494.08 = 39,449.58/x
  3. Step 3: Cross multiply
    66,305.94x = 91,494.08 × 39,449.58
  4. Step 4: Simplify right side
    66,305.94x = 3,609,403,028.49
  5. Step 5: Solve for x
    x = 3,609,403,028.49/66,305.94
  6. Step 6: Final answer
    x = 54,435.59

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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.