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Finding the Fourth Proportional to 66,179.52, 91,342.08 and 40,707.54

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Solution

The fourth proportional to 66,179.52, 91,342.08 and 40,707.54 is: 56,185.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,179.52 : 91,342.08 = 40,707.54 : x
  2. Step 2: Convert to fraction form
    66,179.52/91,342.08 = 40,707.54/x
  3. Step 3: Cross multiply
    66,179.52x = 91,342.08 × 40,707.54
  4. Step 4: Simplify right side
    66,179.52x = 3,718,311,375.28
  5. Step 5: Solve for x
    x = 3,718,311,375.28/66,179.52
  6. Step 6: Final answer
    x = 56,185.23

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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.