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Finding the Fourth Proportional to 72,933.34, 109,418.48 and 20,342.84

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Solution

The fourth proportional to 72,933.34, 109,418.48 and 20,342.84 is: 30,519.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,933.34 : 109,418.48 = 20,342.84 : x
  2. Step 2: Convert to fraction form
    72,933.34/109,418.48 = 20,342.84/x
  3. Step 3: Cross multiply
    72,933.34x = 109,418.48 × 20,342.84
  4. Step 4: Simplify right side
    72,933.34x = 2,225,882,631.68
  5. Step 5: Solve for x
    x = 2,225,882,631.68/72,933.34
  6. Step 6: Final answer
    x = 30,519.41

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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.