Home / 72,932.48-109,399.59-20,338.76

Finding the Fourth Proportional to 72,932.48, 109,399.59 and 20,338.76

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Solution

The fourth proportional to 72,932.48, 109,399.59 and 20,338.76 is: 30,508.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,932.48 : 109,399.59 = 20,338.76 : x
  2. Step 2: Convert to fraction form
    72,932.48/109,399.59 = 20,338.76/x
  3. Step 3: Cross multiply
    72,932.48x = 109,399.59 × 20,338.76
  4. Step 4: Simplify right side
    72,932.48x = 2,225,052,005.11
  5. Step 5: Solve for x
    x = 2,225,052,005.11/72,932.48
  6. Step 6: Final answer
    x = 30,508.38

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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.