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Finding the Fourth Proportional to 66,454.70, 91,707.21 and 36,239.94

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Solution

The fourth proportional to 66,454.70, 91,707.21 and 36,239.94 is: 50,010.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,454.70 : 91,707.21 = 36,239.94 : x
  2. Step 2: Convert to fraction form
    66,454.70/91,707.21 = 36,239.94/x
  3. Step 3: Cross multiply
    66,454.70x = 91,707.21 × 36,239.94
  4. Step 4: Simplify right side
    66,454.70x = 3,323,463,787.97
  5. Step 5: Solve for x
    x = 3,323,463,787.97/66,454.70
  6. Step 6: Final answer
    x = 50,010.97

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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.