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Finding the Fourth Proportional to 72,428.40, 108,610.20 and 32,965.20

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Solution

The fourth proportional to 72,428.40, 108,610.20 and 32,965.20 is: 49,433.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,428.40 : 108,610.20 = 32,965.20 : x
  2. Step 2: Convert to fraction form
    72,428.40/108,610.20 = 32,965.20/x
  3. Step 3: Cross multiply
    72,428.40x = 108,610.20 × 32,965.20
  4. Step 4: Simplify right side
    72,428.40x = 3,580,356,965.04
  5. Step 5: Solve for x
    x = 3,580,356,965.04/72,428.40
  6. Step 6: Final answer
    x = 49,433.05

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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.