Home / 57,719.10-86,581.35-18,279.30

Finding the Fourth Proportional to 57,719.10, 86,581.35 and 18,279.30

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Solution

The fourth proportional to 57,719.10, 86,581.35 and 18,279.30 is: 27,419.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,719.10 : 86,581.35 = 18,279.30 : x
  2. Step 2: Convert to fraction form
    57,719.10/86,581.35 = 18,279.30/x
  3. Step 3: Cross multiply
    57,719.10x = 86,581.35 × 18,279.30
  4. Step 4: Simplify right side
    57,719.10x = 1,582,646,471.06
  5. Step 5: Solve for x
    x = 1,582,646,471.06/57,719.10
  6. Step 6: Final answer
    x = 27,419.81

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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.