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Finding the Fourth Proportional to 66,726.82, 91,556.98 and 66,099.88

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Solution

The fourth proportional to 66,726.82, 91,556.98 and 66,099.88 is: 90,696.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,726.82 : 91,556.98 = 66,099.88 : x
  2. Step 2: Convert to fraction form
    66,726.82/91,556.98 = 66,099.88/x
  3. Step 3: Cross multiply
    66,726.82x = 91,556.98 × 66,099.88
  4. Step 4: Simplify right side
    66,726.82x = 6,051,905,391.16
  5. Step 5: Solve for x
    x = 6,051,905,391.16/66,726.82
  6. Step 6: Final answer
    x = 90,696.75

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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.