Home / 72,223.09-108,317.28-30,103.76

Finding the Fourth Proportional to 72,223.09, 108,317.28 and 30,103.76

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Solution

The fourth proportional to 72,223.09, 108,317.28 and 30,103.76 is: 45,148.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,223.09 : 108,317.28 = 30,103.76 : x
  2. Step 2: Convert to fraction form
    72,223.09/108,317.28 = 30,103.76/x
  3. Step 3: Cross multiply
    72,223.09x = 108,317.28 × 30,103.76
  4. Step 4: Simplify right side
    72,223.09x = 3,260,757,400.97
  5. Step 5: Solve for x
    x = 3,260,757,400.97/72,223.09
  6. Step 6: Final answer
    x = 45,148.41

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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.