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Finding the Fourth Proportional to 66,433.50, 91,678.23 and 36,625.50

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Solution

The fourth proportional to 66,433.50, 91,678.23 and 36,625.50 is: 50,543.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,433.50 : 91,678.23 = 36,625.50 : x
  2. Step 2: Convert to fraction form
    66,433.50/91,678.23 = 36,625.50/x
  3. Step 3: Cross multiply
    66,433.50x = 91,678.23 × 36,625.50
  4. Step 4: Simplify right side
    66,433.50x = 3,357,761,012.87
  5. Step 5: Solve for x
    x = 3,357,761,012.87/66,433.50
  6. Step 6: Final answer
    x = 50,543.19

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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.