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Finding the Fourth Proportional to 66,625.72, 91,941.90 and 36,411.10

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Solution

The fourth proportional to 66,625.72, 91,941.90 and 36,411.10 is: 50,246.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,625.72 : 91,941.90 = 36,411.10 : x
  2. Step 2: Convert to fraction form
    66,625.72/91,941.90 = 36,411.10/x
  3. Step 3: Cross multiply
    66,625.72x = 91,941.90 × 36,411.10
  4. Step 4: Simplify right side
    66,625.72x = 3,347,705,715.09
  5. Step 5: Solve for x
    x = 3,347,705,715.09/66,625.72
  6. Step 6: Final answer
    x = 50,246.45

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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.