Home / 77,143.04-115,723.68-27,212.72

Finding the Fourth Proportional to 77,143.04, 115,723.68 and 27,212.72

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Solution

The fourth proportional to 77,143.04, 115,723.68 and 27,212.72 is: 40,822.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,143.04 : 115,723.68 = 27,212.72 : x
  2. Step 2: Convert to fraction form
    77,143.04/115,723.68 = 27,212.72/x
  3. Step 3: Cross multiply
    77,143.04x = 115,723.68 × 27,212.72
  4. Step 4: Simplify right side
    77,143.04x = 3,149,156,101.21
  5. Step 5: Solve for x
    x = 3,149,156,101.21/77,143.04
  6. Step 6: Final answer
    x = 40,822.30

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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.