Home / 78,029.43-117,015.44-28,096.12

Finding the Fourth Proportional to 78,029.43, 117,015.44 and 28,096.12

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Solution

The fourth proportional to 78,029.43, 117,015.44 and 28,096.12 is: 42,133.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,029.43 : 117,015.44 = 28,096.12 : x
  2. Step 2: Convert to fraction form
    78,029.43/117,015.44 = 28,096.12/x
  3. Step 3: Cross multiply
    78,029.43x = 117,015.44 × 28,096.12
  4. Step 4: Simplify right side
    78,029.43x = 3,287,679,191.67
  5. Step 5: Solve for x
    x = 3,287,679,191.67/78,029.43
  6. Step 6: Final answer
    x = 42,133.84

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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.