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Finding the Fourth Proportional to 66,351.96, 91,566.86 and 37,670.87

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Solution

The fourth proportional to 66,351.96, 91,566.86 and 37,670.87 is: 51,986.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,351.96 : 91,566.86 = 37,670.87 : x
  2. Step 2: Convert to fraction form
    66,351.96/91,566.86 = 37,670.87/x
  3. Step 3: Cross multiply
    66,351.96x = 91,566.86 × 37,670.87
  4. Step 4: Simplify right side
    66,351.96x = 3,449,403,319.93
  5. Step 5: Solve for x
    x = 3,449,403,319.93/66,351.96
  6. Step 6: Final answer
    x = 51,986.46

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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.