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Finding the Fourth Proportional to 66,305.88, 91,502.28 and 36,091.20

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Solution

The fourth proportional to 66,305.88, 91,502.28 and 36,091.20 is: 49,805.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,305.88 : 91,502.28 = 36,091.20 : x
  2. Step 2: Convert to fraction form
    66,305.88/91,502.28 = 36,091.20/x
  3. Step 3: Cross multiply
    66,305.88x = 91,502.28 × 36,091.20
  4. Step 4: Simplify right side
    66,305.88x = 3,302,427,087.94
  5. Step 5: Solve for x
    x = 3,302,427,087.94/66,305.88
  6. Step 6: Final answer
    x = 49,805.95

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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.