Home / 81,134.09-111,964.48-45,324.09

Finding the Fourth Proportional to 81,134.09, 111,964.48 and 45,324.09

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Solution

The fourth proportional to 81,134.09, 111,964.48 and 45,324.09 is: 62,546.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,134.09 : 111,964.48 = 45,324.09 : x
  2. Step 2: Convert to fraction form
    81,134.09/111,964.48 = 45,324.09/x
  3. Step 3: Cross multiply
    81,134.09x = 111,964.48 × 45,324.09
  4. Step 4: Simplify right side
    81,134.09x = 5,074,688,055.01
  5. Step 5: Solve for x
    x = 5,074,688,055.01/81,134.09
  6. Step 6: Final answer
    x = 62,546.93

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1.5x scale

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.