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Finding the Fourth Proportional to 69,042, 103,564.26 and 21,656.03

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Solution

The fourth proportional to 69,042, 103,564.26 and 21,656.03 is: 32,484.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,042 : 103,564.26 = 21,656.03 : x
  2. Step 2: Convert to fraction form
    69,042/103,564.26 = 21,656.03/x
  3. Step 3: Cross multiply
    69,042x = 103,564.26 × 21,656.03
  4. Step 4: Simplify right side
    69,042x = 2,242,790,721.49
  5. Step 5: Solve for x
    x = 2,242,790,721.49/69,042
  6. Step 6: Final answer
    x = 32,484.44

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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.