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Finding the Fourth Proportional to 66,138.56, 91,271.87 and 35,924.47

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Solution

The fourth proportional to 66,138.56, 91,271.87 and 35,924.47 is: 49,576.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,138.56 : 91,271.87 = 35,924.47 : x
  2. Step 2: Convert to fraction form
    66,138.56/91,271.87 = 35,924.47/x
  3. Step 3: Cross multiply
    66,138.56x = 91,271.87 × 35,924.47
  4. Step 4: Simplify right side
    66,138.56x = 3,278,893,417.29
  5. Step 5: Solve for x
    x = 3,278,893,417.29/66,138.56
  6. Step 6: Final answer
    x = 49,576.13

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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.