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Finding the Fourth Proportional to 66,462.40, 91,723.60 and 37,791.08

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Solution

The fourth proportional to 66,462.40, 91,723.60 and 37,791.08 is: 52,154.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,462.40 : 91,723.60 = 37,791.08 : x
  2. Step 2: Convert to fraction form
    66,462.40/91,723.60 = 37,791.08/x
  3. Step 3: Cross multiply
    66,462.40x = 91,723.60 × 37,791.08
  4. Step 4: Simplify right side
    66,462.40x = 3,466,333,905.49
  5. Step 5: Solve for x
    x = 3,466,333,905.49/66,462.40
  6. Step 6: Final answer
    x = 52,154.81

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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.