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Finding the Fourth Proportional to 66,204.65, 91,361.35 and 35,990.74

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Solution

The fourth proportional to 66,204.65, 91,361.35 and 35,990.74 is: 49,666.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,204.65 : 91,361.35 = 35,990.74 : x
  2. Step 2: Convert to fraction form
    66,204.65/91,361.35 = 35,990.74/x
  3. Step 3: Cross multiply
    66,204.65x = 91,361.35 × 35,990.74
  4. Step 4: Simplify right side
    66,204.65x = 3,288,162,113.63
  5. Step 5: Solve for x
    x = 3,288,162,113.63/66,204.65
  6. Step 6: Final answer
    x = 49,666.63

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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.