Home / 72,933.61-109,418.88-20,343.08

Finding the Fourth Proportional to 72,933.61, 109,418.88 and 20,343.08

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Solution

The fourth proportional to 72,933.61, 109,418.88 and 20,343.08 is: 30,519.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,933.61 : 109,418.88 = 20,343.08 : x
  2. Step 2: Convert to fraction form
    72,933.61/109,418.88 = 20,343.08/x
  3. Step 3: Cross multiply
    72,933.61x = 109,418.88 × 20,343.08
  4. Step 4: Simplify right side
    72,933.61x = 2,225,917,029.35
  5. Step 5: Solve for x
    x = 2,225,917,029.35/72,933.61
  6. Step 6: Final answer
    x = 30,519.77

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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.