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Finding the Fourth Proportional to 66,375.63, 91,605.84 and 40,877.01

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Solution

The fourth proportional to 66,375.63, 91,605.84 and 40,877.01 is: 56,414.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,375.63 : 91,605.84 = 40,877.01 : x
  2. Step 2: Convert to fraction form
    66,375.63/91,605.84 = 40,877.01/x
  3. Step 3: Cross multiply
    66,375.63x = 91,605.84 × 40,877.01
  4. Step 4: Simplify right side
    66,375.63x = 3,744,572,837.74
  5. Step 5: Solve for x
    x = 3,744,572,837.74/66,375.63
  6. Step 6: Final answer
    x = 56,414.87

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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.