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Finding the Fourth Proportional to 66,571.06, 91,868.68 and 37,889.31

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Solution

The fourth proportional to 66,571.06, 91,868.68 and 37,889.31 is: 52,287.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,571.06 : 91,868.68 = 37,889.31 : x
  2. Step 2: Convert to fraction form
    66,571.06/91,868.68 = 37,889.31/x
  3. Step 3: Cross multiply
    66,571.06x = 91,868.68 × 37,889.31
  4. Step 4: Simplify right side
    66,571.06x = 3,480,840,571.42
  5. Step 5: Solve for x
    x = 3,480,840,571.42/66,571.06
  6. Step 6: Final answer
    x = 52,287.60

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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.