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Finding the Fourth Proportional to 83,505.44, 115,239.12 and 45,777.44

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Solution

The fourth proportional to 83,505.44, 115,239.12 and 45,777.44 is: 63,173.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,505.44 : 115,239.12 = 45,777.44 : x
  2. Step 2: Convert to fraction form
    83,505.44/115,239.12 = 45,777.44/x
  3. Step 3: Cross multiply
    83,505.44x = 115,239.12 × 45,777.44
  4. Step 4: Simplify right side
    83,505.44x = 5,275,351,901.45
  5. Step 5: Solve for x
    x = 5,275,351,901.45/83,505.44
  6. Step 6: Final answer
    x = 63,173.75

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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.