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Finding the Fourth Proportional to 66,171.62, 91,316.90 and 35,957.28

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Solution

The fourth proportional to 66,171.62, 91,316.90 and 35,957.28 is: 49,621.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,171.62 : 91,316.90 = 35,957.28 : x
  2. Step 2: Convert to fraction form
    66,171.62/91,316.90 = 35,957.28/x
  3. Step 3: Cross multiply
    66,171.62x = 91,316.90 × 35,957.28
  4. Step 4: Simplify right side
    66,171.62x = 3,283,507,342.03
  5. Step 5: Solve for x
    x = 3,283,507,342.03/66,171.62
  6. Step 6: Final answer
    x = 49,621.08

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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.