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Finding the Fourth Proportional to 66,020.91, 91,108.91 and 35,806.22

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Solution

The fourth proportional to 66,020.91, 91,108.91 and 35,806.22 is: 49,412.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,020.91 : 91,108.91 = 35,806.22 : x
  2. Step 2: Convert to fraction form
    66,020.91/91,108.91 = 35,806.22/x
  3. Step 3: Cross multiply
    66,020.91x = 91,108.91 × 35,806.22
  4. Step 4: Simplify right side
    66,020.91x = 3,262,265,724.16
  5. Step 5: Solve for x
    x = 3,262,265,724.16/66,020.91
  6. Step 6: Final answer
    x = 49,412.61

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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.