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Finding the Fourth Proportional to 75,490.38, 113,112.45 and 45,917.28

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Solution

The fourth proportional to 75,490.38, 113,112.45 and 45,917.28 is: 68,801.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,490.38 : 113,112.45 = 45,917.28 : x
  2. Step 2: Convert to fraction form
    75,490.38/113,112.45 = 45,917.28/x
  3. Step 3: Cross multiply
    75,490.38x = 113,112.45 × 45,917.28
  4. Step 4: Simplify right side
    75,490.38x = 5,193,816,038.14
  5. Step 5: Solve for x
    x = 5,193,816,038.14/75,490.38
  6. Step 6: Final answer
    x = 68,801.03

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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.