Home / 72,606.85-108,917-28,236.94

Finding the Fourth Proportional to 72,606.85, 108,917 and 28,236.94

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Solution

The fourth proportional to 72,606.85, 108,917 and 28,236.94 is: 42,358.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,606.85 : 108,917 = 28,236.94 : x
  2. Step 2: Convert to fraction form
    72,606.85/108,917 = 28,236.94/x
  3. Step 3: Cross multiply
    72,606.85x = 108,917 × 28,236.94
  4. Step 4: Simplify right side
    72,606.85x = 3,075,482,793.98
  5. Step 5: Solve for x
    x = 3,075,482,793.98/72,606.85
  6. Step 6: Final answer
    x = 42,358.03

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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.