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Finding the Fourth Proportional to 66,510.65, 91,781.02 and 37,826.44

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Solution

The fourth proportional to 66,510.65, 91,781.02 and 37,826.44 is: 52,198.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,510.65 : 91,781.02 = 37,826.44 : x
  2. Step 2: Convert to fraction form
    66,510.65/91,781.02 = 37,826.44/x
  3. Step 3: Cross multiply
    66,510.65x = 91,781.02 × 37,826.44
  4. Step 4: Simplify right side
    66,510.65x = 3,471,749,246.17
  5. Step 5: Solve for x
    x = 3,471,749,246.17/66,510.65
  6. Step 6: Final answer
    x = 52,198.40

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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.