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Finding the Fourth Proportional to 73,043.88, 100,800.81 and 39,509.88

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Solution

The fourth proportional to 73,043.88, 100,800.81 and 39,509.88 is: 54,523.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,043.88 : 100,800.81 = 39,509.88 : x
  2. Step 2: Convert to fraction form
    73,043.88/100,800.81 = 39,509.88/x
  3. Step 3: Cross multiply
    73,043.88x = 100,800.81 × 39,509.88
  4. Step 4: Simplify right side
    73,043.88x = 3,982,627,907.00
  5. Step 5: Solve for x
    x = 3,982,627,907.00/73,043.88
  6. Step 6: Final answer
    x = 54,523.77

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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.