Home / 72,965.28-109,383.31-28,623.85

Finding the Fourth Proportional to 72,965.28, 109,383.31 and 28,623.85

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Solution

The fourth proportional to 72,965.28, 109,383.31 and 28,623.85 is: 42,910.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,965.28 : 109,383.31 = 28,623.85 : x
  2. Step 2: Convert to fraction form
    72,965.28/109,383.31 = 28,623.85/x
  3. Step 3: Cross multiply
    72,965.28x = 109,383.31 × 28,623.85
  4. Step 4: Simplify right side
    72,965.28x = 3,130,971,457.94
  5. Step 5: Solve for x
    x = 3,130,971,457.94/72,965.28
  6. Step 6: Final answer
    x = 42,910.43

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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.