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Finding the Fourth Proportional to 81,103.87, 111,923.58 and 45,295.24

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Solution

The fourth proportional to 81,103.87, 111,923.58 and 45,295.24 is: 62,507.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,103.87 : 111,923.58 = 45,295.24 : x
  2. Step 2: Convert to fraction form
    81,103.87/111,923.58 = 45,295.24/x
  3. Step 3: Cross multiply
    81,103.87x = 111,923.58 × 45,295.24
  4. Step 4: Simplify right side
    81,103.87x = 5,069,604,858.14
  5. Step 5: Solve for x
    x = 5,069,604,858.14/81,103.87
  6. Step 6: Final answer
    x = 62,507.56

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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.