Home / 72,734.64-109,089.56-20,131.80

Finding the Fourth Proportional to 72,734.64, 109,089.56 and 20,131.80

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Solution

The fourth proportional to 72,734.64, 109,089.56 and 20,131.80 is: 30,194.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,734.64 : 109,089.56 = 20,131.80 : x
  2. Step 2: Convert to fraction form
    72,734.64/109,089.56 = 20,131.80/x
  3. Step 3: Cross multiply
    72,734.64x = 109,089.56 × 20,131.80
  4. Step 4: Simplify right side
    72,734.64x = 2,196,169,204.01
  5. Step 5: Solve for x
    x = 2,196,169,204.01/72,734.64
  6. Step 6: Final answer
    x = 30,194.27

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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.