Home / 57,860.20-86,790.30-18,421.30

Finding the Fourth Proportional to 57,860.20, 86,790.30 and 18,421.30

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Solution

The fourth proportional to 57,860.20, 86,790.30 and 18,421.30 is: 27,631.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,860.20 : 86,790.30 = 18,421.30 : x
  2. Step 2: Convert to fraction form
    57,860.20/86,790.30 = 18,421.30/x
  3. Step 3: Cross multiply
    57,860.20x = 86,790.30 × 18,421.30
  4. Step 4: Simplify right side
    57,860.20x = 1,598,790,153.39
  5. Step 5: Solve for x
    x = 1,598,790,153.39/57,860.20
  6. Step 6: Final answer
    x = 27,631.95

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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.