Home / 78,070.44-117,069.20-28,143.96

Finding the Fourth Proportional to 78,070.44, 117,069.20 and 28,143.96

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Solution

The fourth proportional to 78,070.44, 117,069.20 and 28,143.96 is: 42,202.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,070.44 : 117,069.20 = 28,143.96 : x
  2. Step 2: Convert to fraction form
    78,070.44/117,069.20 = 28,143.96/x
  3. Step 3: Cross multiply
    78,070.44x = 117,069.20 × 28,143.96
  4. Step 4: Simplify right side
    78,070.44x = 3,294,790,882.03
  5. Step 5: Solve for x
    x = 3,294,790,882.03/78,070.44
  6. Step 6: Final answer
    x = 42,202.80

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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.