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Finding the Fourth Proportional to 66,891.30, 92,296.98 and 39,662.34

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Solution

The fourth proportional to 66,891.30, 92,296.98 and 39,662.34 is: 54,726.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,891.30 : 92,296.98 = 39,662.34 : x
  2. Step 2: Convert to fraction form
    66,891.30/92,296.98 = 39,662.34/x
  3. Step 3: Cross multiply
    66,891.30x = 92,296.98 × 39,662.34
  4. Step 4: Simplify right side
    66,891.30x = 3,660,714,201.73
  5. Step 5: Solve for x
    x = 3,660,714,201.73/66,891.30
  6. Step 6: Final answer
    x = 54,726.31

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1.5x scale

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.