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Finding the Fourth Proportional to 71,522.88, 107,285.13 and 21,603.39

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Solution

The fourth proportional to 71,522.88, 107,285.13 and 21,603.39 is: 32,405.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,522.88 : 107,285.13 = 21,603.39 : x
  2. Step 2: Convert to fraction form
    71,522.88/107,285.13 = 21,603.39/x
  3. Step 3: Cross multiply
    71,522.88x = 107,285.13 × 21,603.39
  4. Step 4: Simplify right side
    71,522.88x = 2,317,722,504.59
  5. Step 5: Solve for x
    x = 2,317,722,504.59/71,522.88
  6. Step 6: Final answer
    x = 32,405.33

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1.5x scale

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.