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Finding the Fourth Proportional to 69,755.60, 104,649.80 and 21,722.00

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Solution

The fourth proportional to 69,755.60, 104,649.80 and 21,722.00 is: 32,588.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,755.60 : 104,649.80 = 21,722.00 : x
  2. Step 2: Convert to fraction form
    69,755.60/104,649.80 = 21,722.00/x
  3. Step 3: Cross multiply
    69,755.60x = 104,649.80 × 21,722.00
  4. Step 4: Simplify right side
    69,755.60x = 2,273,202,323.74
  5. Step 5: Solve for x
    x = 2,273,202,323.74/69,755.60
  6. Step 6: Final answer
    x = 32,588.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.