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Finding the Fourth Proportional to 66,466, 91,723.89 and 38,174.32

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Solution

The fourth proportional to 66,466, 91,723.89 and 38,174.32 is: 52,681.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,466 : 91,723.89 = 38,174.32 : x
  2. Step 2: Convert to fraction form
    66,466/91,723.89 = 38,174.32/x
  3. Step 3: Cross multiply
    66,466x = 91,723.89 × 38,174.32
  4. Step 4: Simplify right side
    66,466x = 3,501,497,128.50
  5. Step 5: Solve for x
    x = 3,501,497,128.50/66,466
  6. Step 6: Final answer
    x = 52,681.03

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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.