Home / 57,867.35-86,807.96-20,419.68

Finding the Fourth Proportional to 57,867.35, 86,807.96 and 20,419.68

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Solution

The fourth proportional to 57,867.35, 86,807.96 and 20,419.68 is: 30,631.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,867.35 : 86,807.96 = 20,419.68 : x
  2. Step 2: Convert to fraction form
    57,867.35/86,807.96 = 20,419.68/x
  3. Step 3: Cross multiply
    57,867.35x = 86,807.96 × 20,419.68
  4. Step 4: Simplify right side
    57,867.35x = 1,772,591,064.66
  5. Step 5: Solve for x
    x = 1,772,591,064.66/57,867.35
  6. Step 6: Final answer
    x = 30,631.97

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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.