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Finding the Fourth Proportional to 39,114.40, 53,982.12 and 22,125.40

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Solution

The fourth proportional to 39,114.40, 53,982.12 and 22,125.40 is: 30,535.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,114.40 : 53,982.12 = 22,125.40 : x
  2. Step 2: Convert to fraction form
    39,114.40/53,982.12 = 22,125.40/x
  3. Step 3: Cross multiply
    39,114.40x = 53,982.12 × 22,125.40
  4. Step 4: Simplify right side
    39,114.40x = 1,194,375,997.85
  5. Step 5: Solve for x
    x = 1,194,375,997.85/39,114.40
  6. Step 6: Final answer
    x = 30,535.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.