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Finding the Fourth Proportional to 66,725.82, 91,555.61 and 66,098.88

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Solution

The fourth proportional to 66,725.82, 91,555.61 and 66,098.88 is: 90,695.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,725.82 : 91,555.61 = 66,098.88 : x
  2. Step 2: Convert to fraction form
    66,725.82/91,555.61 = 66,098.88/x
  3. Step 3: Cross multiply
    66,725.82x = 91,555.61 × 66,098.88
  4. Step 4: Simplify right side
    66,725.82x = 6,051,722,948.22
  5. Step 5: Solve for x
    x = 6,051,722,948.22/66,725.82
  6. Step 6: Final answer
    x = 90,695.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.