Home / 57,719.60-86,582.10-18,279.80

Finding the Fourth Proportional to 57,719.60, 86,582.10 and 18,279.80

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Solution

The fourth proportional to 57,719.60, 86,582.10 and 18,279.80 is: 27,420.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,719.60 : 86,582.10 = 18,279.80 : x
  2. Step 2: Convert to fraction form
    57,719.60/86,582.10 = 18,279.80/x
  3. Step 3: Cross multiply
    57,719.60x = 86,582.10 × 18,279.80
  4. Step 4: Simplify right side
    57,719.60x = 1,582,703,471.58
  5. Step 5: Solve for x
    x = 1,582,703,471.58/57,719.60
  6. Step 6: Final answer
    x = 27,420.56

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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.