Home / 78,241.67-117,333.04-28,309.42

Finding the Fourth Proportional to 78,241.67, 117,333.04 and 28,309.42

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Solution

The fourth proportional to 78,241.67, 117,333.04 and 28,309.42 is: 42,453.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,241.67 : 117,333.04 = 28,309.42 : x
  2. Step 2: Convert to fraction form
    78,241.67/117,333.04 = 28,309.42/x
  3. Step 3: Cross multiply
    78,241.67x = 117,333.04 × 28,309.42
  4. Step 4: Simplify right side
    78,241.67x = 3,321,630,238.46
  5. Step 5: Solve for x
    x = 3,321,630,238.46/78,241.67
  6. Step 6: Final answer
    x = 42,453.47

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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.