Home / 72,039.30-108,135.04-40,476.34

Finding the Fourth Proportional to 72,039.30, 108,135.04 and 40,476.34

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Solution

The fourth proportional to 72,039.30, 108,135.04 and 40,476.34 is: 60,757.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,039.30 : 108,135.04 = 40,476.34 : x
  2. Step 2: Convert to fraction form
    72,039.30/108,135.04 = 40,476.34/x
  3. Step 3: Cross multiply
    72,039.30x = 108,135.04 × 40,476.34
  4. Step 4: Simplify right side
    72,039.30x = 4,376,910,475.81
  5. Step 5: Solve for x
    x = 4,376,910,475.81/72,039.30
  6. Step 6: Final answer
    x = 60,757.26

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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.