Home / 45,288.96-67,911.60-18,986.64

Finding the Fourth Proportional to 45,288.96, 67,911.60 and 18,986.64

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Solution

The fourth proportional to 45,288.96, 67,911.60 and 18,986.64 is: 28,470.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,288.96 : 67,911.60 = 18,986.64 : x
  2. Step 2: Convert to fraction form
    45,288.96/67,911.60 = 18,986.64/x
  3. Step 3: Cross multiply
    45,288.96x = 67,911.60 × 18,986.64
  4. Step 4: Simplify right side
    45,288.96x = 1,289,413,101.02
  5. Step 5: Solve for x
    x = 1,289,413,101.02/45,288.96
  6. Step 6: Final answer
    x = 28,470.80

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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.