Home / 67,228.27-100,857.53-20,485.87

Finding the Fourth Proportional to 67,228.27, 100,857.53 and 20,485.87

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Solution

The fourth proportional to 67,228.27, 100,857.53 and 20,485.87 is: 30,733.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,228.27 : 100,857.53 = 20,485.87 : x
  2. Step 2: Convert to fraction form
    67,228.27/100,857.53 = 20,485.87/x
  3. Step 3: Cross multiply
    67,228.27x = 100,857.53 × 20,485.87
  4. Step 4: Simplify right side
    67,228.27x = 2,066,154,248.10
  5. Step 5: Solve for x
    x = 2,066,154,248.10/67,228.27
  6. Step 6: Final answer
    x = 30,733.41

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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.