Home / 57,942.68-86,913.30-18,499.28

Finding the Fourth Proportional to 57,942.68, 86,913.30 and 18,499.28

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Solution

The fourth proportional to 57,942.68, 86,913.30 and 18,499.28 is: 27,748.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,942.68 : 86,913.30 = 18,499.28 : x
  2. Step 2: Convert to fraction form
    57,942.68/86,913.30 = 18,499.28/x
  3. Step 3: Cross multiply
    57,942.68x = 86,913.30 × 18,499.28
  4. Step 4: Simplify right side
    57,942.68x = 1,607,833,472.42
  5. Step 5: Solve for x
    x = 1,607,833,472.42/57,942.68
  6. Step 6: Final answer
    x = 27,748.69

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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.