Home / 72,931.24-109,399.26-20,336.28

Finding the Fourth Proportional to 72,931.24, 109,399.26 and 20,336.28

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Solution

The fourth proportional to 72,931.24, 109,399.26 and 20,336.28 is: 30,505.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,931.24 : 109,399.26 = 20,336.28 : x
  2. Step 2: Convert to fraction form
    72,931.24/109,399.26 = 20,336.28/x
  3. Step 3: Cross multiply
    72,931.24x = 109,399.26 × 20,336.28
  4. Step 4: Simplify right side
    72,931.24x = 2,224,773,983.15
  5. Step 5: Solve for x
    x = 2,224,773,983.15/72,931.24
  6. Step 6: Final answer
    x = 30,505.09

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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.