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Finding the Fourth Proportional to 71,249.52, 106,880.52 and 18,659.04

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Solution

The fourth proportional to 71,249.52, 106,880.52 and 18,659.04 is: 27,990.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,249.52 : 106,880.52 = 18,659.04 : x
  2. Step 2: Convert to fraction form
    71,249.52/106,880.52 = 18,659.04/x
  3. Step 3: Cross multiply
    71,249.52x = 106,880.52 × 18,659.04
  4. Step 4: Simplify right side
    71,249.52x = 1,994,287,897.90
  5. Step 5: Solve for x
    x = 1,994,287,897.90/71,249.52
  6. Step 6: Final answer
    x = 27,990.19

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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.