Home / 72,266.28-108,362.07-31,723.20

Finding the Fourth Proportional to 72,266.28, 108,362.07 and 31,723.20

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Solution

The fourth proportional to 72,266.28, 108,362.07 and 31,723.20 is: 47,568.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,266.28 : 108,362.07 = 31,723.20 : x
  2. Step 2: Convert to fraction form
    72,266.28/108,362.07 = 31,723.20/x
  3. Step 3: Cross multiply
    72,266.28x = 108,362.07 × 31,723.20
  4. Step 4: Simplify right side
    72,266.28x = 3,437,591,093.70
  5. Step 5: Solve for x
    x = 3,437,591,093.70/72,266.28
  6. Step 6: Final answer
    x = 47,568.40

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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.