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Finding the Fourth Proportional to 69,263.01, 103,897.61 and 21,228.08

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Solution

The fourth proportional to 69,263.01, 103,897.61 and 21,228.08 is: 31,843.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,263.01 : 103,897.61 = 21,228.08 : x
  2. Step 2: Convert to fraction form
    69,263.01/103,897.61 = 21,228.08/x
  3. Step 3: Cross multiply
    69,263.01x = 103,897.61 × 21,228.08
  4. Step 4: Simplify right side
    69,263.01x = 2,205,546,151.26
  5. Step 5: Solve for x
    x = 2,205,546,151.26/69,263.01
  6. Step 6: Final answer
    x = 31,843.06

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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.