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Finding the Fourth Proportional to 66,359.78, 91,576.63 and 36,145.01

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Solution

The fourth proportional to 66,359.78, 91,576.63 and 36,145.01 is: 49,880.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,359.78 : 91,576.63 = 36,145.01 : x
  2. Step 2: Convert to fraction form
    66,359.78/91,576.63 = 36,145.01/x
  3. Step 3: Cross multiply
    66,359.78x = 91,576.63 × 36,145.01
  4. Step 4: Simplify right side
    66,359.78x = 3,310,038,020.36
  5. Step 5: Solve for x
    x = 3,310,038,020.36/66,359.78
  6. Step 6: Final answer
    x = 49,880.18

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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.