Home / 57,374.40-86,035.68-20,439.36

Finding the Fourth Proportional to 57,374.40, 86,035.68 and 20,439.36

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Solution

The fourth proportional to 57,374.40, 86,035.68 and 20,439.36 is: 30,649.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,374.40 : 86,035.68 = 20,439.36 : x
  2. Step 2: Convert to fraction form
    57,374.40/86,035.68 = 20,439.36/x
  3. Step 3: Cross multiply
    57,374.40x = 86,035.68 × 20,439.36
  4. Step 4: Simplify right side
    57,374.40x = 1,758,514,236.36
  5. Step 5: Solve for x
    x = 1,758,514,236.36/57,374.40
  6. Step 6: Final answer
    x = 30,649.81

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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.