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Finding the Fourth Proportional to 39,945.48, 59,874.48 and 20,196.90

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Solution

The fourth proportional to 39,945.48, 59,874.48 and 20,196.90 is: 30,273.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,945.48 : 59,874.48 = 20,196.90 : x
  2. Step 2: Convert to fraction form
    39,945.48/59,874.48 = 20,196.90/x
  3. Step 3: Cross multiply
    39,945.48x = 59,874.48 × 20,196.90
  4. Step 4: Simplify right side
    39,945.48x = 1,209,278,885.11
  5. Step 5: Solve for x
    x = 1,209,278,885.11/39,945.48
  6. Step 6: Final answer
    x = 30,273.23

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1.5x scale

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.