Home / 72,753.12-109,126.62-20,161.24

Finding the Fourth Proportional to 72,753.12, 109,126.62 and 20,161.24

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Solution

The fourth proportional to 72,753.12, 109,126.62 and 20,161.24 is: 30,241.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,753.12 : 109,126.62 = 20,161.24 : x
  2. Step 2: Convert to fraction form
    72,753.12/109,126.62 = 20,161.24/x
  3. Step 3: Cross multiply
    72,753.12x = 109,126.62 × 20,161.24
  4. Step 4: Simplify right side
    72,753.12x = 2,200,127,703.39
  5. Step 5: Solve for x
    x = 2,200,127,703.39/72,753.12
  6. Step 6: Final answer
    x = 30,241.01

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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.