Home / 81,118.29-111,943.71-45,309.81

Finding the Fourth Proportional to 81,118.29, 111,943.71 and 45,309.81

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Solution

The fourth proportional to 81,118.29, 111,943.71 and 45,309.81 is: 62,527.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,118.29 : 111,943.71 = 45,309.81 : x
  2. Step 2: Convert to fraction form
    81,118.29/111,943.71 = 45,309.81/x
  3. Step 3: Cross multiply
    81,118.29x = 111,943.71 × 45,309.81
  4. Step 4: Simplify right side
    81,118.29x = 5,072,148,230.80
  5. Step 5: Solve for x
    x = 5,072,148,230.80/81,118.29
  6. Step 6: Final answer
    x = 62,527.80

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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.