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Finding the Fourth Proportional to 35,489.80, 53,169.90 and 21,622.60

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Solution

The fourth proportional to 35,489.80, 53,169.90 and 21,622.60 is: 32,394.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,489.80 : 53,169.90 = 21,622.60 : x
  2. Step 2: Convert to fraction form
    35,489.80/53,169.90 = 21,622.60/x
  3. Step 3: Cross multiply
    35,489.80x = 53,169.90 × 21,622.60
  4. Step 4: Simplify right side
    35,489.80x = 1,149,671,479.74
  5. Step 5: Solve for x
    x = 1,149,671,479.74/35,489.80
  6. Step 6: Final answer
    x = 32,394.42

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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.