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Finding the Fourth Proportional to 66,573.90, 91,872.72 and 36,360.11

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Solution

The fourth proportional to 66,573.90, 91,872.72 and 36,360.11 is: 50,177.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,573.90 : 91,872.72 = 36,360.11 : x
  2. Step 2: Convert to fraction form
    66,573.90/91,872.72 = 36,360.11/x
  3. Step 3: Cross multiply
    66,573.90x = 91,872.72 × 36,360.11
  4. Step 4: Simplify right side
    66,573.90x = 3,340,502,434.88
  5. Step 5: Solve for x
    x = 3,340,502,434.88/66,573.90
  6. Step 6: Final answer
    x = 50,177.36

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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.