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Finding the Fourth Proportional to 66,510.91, 91,781.36 and 37,826.69

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Solution

The fourth proportional to 66,510.91, 91,781.36 and 37,826.69 is: 52,198.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,510.91 : 91,781.36 = 37,826.69 : x
  2. Step 2: Convert to fraction form
    66,510.91/91,781.36 = 37,826.69/x
  3. Step 3: Cross multiply
    66,510.91x = 91,781.36 × 37,826.69
  4. Step 4: Simplify right side
    66,510.91x = 3,471,785,052.50
  5. Step 5: Solve for x
    x = 3,471,785,052.50/66,510.91
  6. Step 6: Final answer
    x = 52,198.73

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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.