Home / 72,857.64-109,299.18-30,162.84

Finding the Fourth Proportional to 72,857.64, 109,299.18 and 30,162.84

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Solution

The fourth proportional to 72,857.64, 109,299.18 and 30,162.84 is: 45,249.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,857.64 : 109,299.18 = 30,162.84 : x
  2. Step 2: Convert to fraction form
    72,857.64/109,299.18 = 30,162.84/x
  3. Step 3: Cross multiply
    72,857.64x = 109,299.18 × 30,162.84
  4. Step 4: Simplify right side
    72,857.64x = 3,296,773,678.47
  5. Step 5: Solve for x
    x = 3,296,773,678.47/72,857.64
  6. Step 6: Final answer
    x = 45,249.53

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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.