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Finding the Fourth Proportional to 66,475.20, 91,719.17 and 40,627.14

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Solution

The fourth proportional to 66,475.20, 91,719.17 and 40,627.14 is: 56,055.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,475.20 : 91,719.17 = 40,627.14 : x
  2. Step 2: Convert to fraction form
    66,475.20/91,719.17 = 40,627.14/x
  3. Step 3: Cross multiply
    66,475.20x = 91,719.17 × 40,627.14
  4. Step 4: Simplify right side
    66,475.20x = 3,726,287,357.14
  5. Step 5: Solve for x
    x = 3,726,287,357.14/66,475.20
  6. Step 6: Final answer
    x = 56,055.30

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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.