Home / 76,442.61-114,652.77-20,286.12

Finding the Fourth Proportional to 76,442.61, 114,652.77 and 20,286.12

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Solution

The fourth proportional to 76,442.61, 114,652.77 and 20,286.12 is: 30,426.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,442.61 : 114,652.77 = 20,286.12 : x
  2. Step 2: Convert to fraction form
    76,442.61/114,652.77 = 20,286.12/x
  3. Step 3: Cross multiply
    76,442.61x = 114,652.77 × 20,286.12
  4. Step 4: Simplify right side
    76,442.61x = 2,325,859,277.29
  5. Step 5: Solve for x
    x = 2,325,859,277.29/76,442.61
  6. Step 6: Final answer
    x = 30,426.22

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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.