Home / 74,493.91-111,740.58-30,120.13

Finding the Fourth Proportional to 74,493.91, 111,740.58 and 30,120.13

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Solution

The fourth proportional to 74,493.91, 111,740.58 and 30,120.13 is: 45,180.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,493.91 : 111,740.58 = 30,120.13 : x
  2. Step 2: Convert to fraction form
    74,493.91/111,740.58 = 30,120.13/x
  3. Step 3: Cross multiply
    74,493.91x = 111,740.58 × 30,120.13
  4. Step 4: Simplify right side
    74,493.91x = 3,365,640,795.88
  5. Step 5: Solve for x
    x = 3,365,640,795.88/74,493.91
  6. Step 6: Final answer
    x = 45,180.08

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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.