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Finding the Fourth Proportional to 66,571.63, 91,869.47 and 37,889.88

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Solution

The fourth proportional to 66,571.63, 91,869.47 and 37,889.88 is: 52,288.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,571.63 : 91,869.47 = 37,889.88 : x
  2. Step 2: Convert to fraction form
    66,571.63/91,869.47 = 37,889.88/x
  3. Step 3: Cross multiply
    66,571.63x = 91,869.47 × 37,889.88
  4. Step 4: Simplify right side
    66,571.63x = 3,480,923,193.96
  5. Step 5: Solve for x
    x = 3,480,923,193.96/66,571.63
  6. Step 6: Final answer
    x = 52,288.39

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1.5x scale

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.