Home / 81,154.24-111,992.21-45,343.87

Finding the Fourth Proportional to 81,154.24, 111,992.21 and 45,343.87

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Solution

The fourth proportional to 81,154.24, 111,992.21 and 45,343.87 is: 62,574.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,154.24 : 111,992.21 = 45,343.87 : x
  2. Step 2: Convert to fraction form
    81,154.24/111,992.21 = 45,343.87/x
  3. Step 3: Cross multiply
    81,154.24x = 111,992.21 × 45,343.87
  4. Step 4: Simplify right side
    81,154.24x = 5,078,159,874.59
  5. Step 5: Solve for x
    x = 5,078,159,874.59/81,154.24
  6. Step 6: Final answer
    x = 62,574.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.