Home / 79,239.82-109,350.03-42,940.54

Finding the Fourth Proportional to 79,239.82, 109,350.03 and 42,940.54

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Solution

The fourth proportional to 79,239.82, 109,350.03 and 42,940.54 is: 59,257.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,239.82 : 109,350.03 = 42,940.54 : x
  2. Step 2: Convert to fraction form
    79,239.82/109,350.03 = 42,940.54/x
  3. Step 3: Cross multiply
    79,239.82x = 109,350.03 × 42,940.54
  4. Step 4: Simplify right side
    79,239.82x = 4,695,549,337.22
  5. Step 5: Solve for x
    x = 4,695,549,337.22/79,239.82
  6. Step 6: Final answer
    x = 59,257.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.