Home / 74,079.57-111,181.65-69,408.70

Finding the Fourth Proportional to 74,079.57, 111,181.65 and 69,408.70

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Solution

The fourth proportional to 74,079.57, 111,181.65 and 69,408.70 is: 104,171.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,079.57 : 111,181.65 = 69,408.70 : x
  2. Step 2: Convert to fraction form
    74,079.57/111,181.65 = 69,408.70/x
  3. Step 3: Cross multiply
    74,079.57x = 111,181.65 × 69,408.70
  4. Step 4: Simplify right side
    74,079.57x = 7,716,973,790.36
  5. Step 5: Solve for x
    x = 7,716,973,790.36/74,079.57
  6. Step 6: Final answer
    x = 104,171.42

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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.