Home / 30,078.60-45,119.38-7,892.02

Finding the Fourth Proportional to 30,078.60, 45,119.38 and 7,892.02

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Solution

The fourth proportional to 30,078.60, 45,119.38 and 7,892.02 is: 11,838.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,078.60 : 45,119.38 = 7,892.02 : x
  2. Step 2: Convert to fraction form
    30,078.60/45,119.38 = 7,892.02/x
  3. Step 3: Cross multiply
    30,078.60x = 45,119.38 × 7,892.02
  4. Step 4: Simplify right side
    30,078.60x = 356,083,049.35
  5. Step 5: Solve for x
    x = 356,083,049.35/30,078.60
  6. Step 6: Final answer
    x = 11,838.42

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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.