Home / 57,945.60-86,929.20-18,513.90

Finding the Fourth Proportional to 57,945.60, 86,929.20 and 18,513.90

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Solution

The fourth proportional to 57,945.60, 86,929.20 and 18,513.90 is: 27,774.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,945.60 : 86,929.20 = 18,513.90 : x
  2. Step 2: Convert to fraction form
    57,945.60/86,929.20 = 18,513.90/x
  3. Step 3: Cross multiply
    57,945.60x = 86,929.20 × 18,513.90
  4. Step 4: Simplify right side
    57,945.60x = 1,609,398,515.88
  5. Step 5: Solve for x
    x = 1,609,398,515.88/57,945.60
  6. Step 6: Final answer
    x = 27,774.30

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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.