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Finding the Fourth Proportional to 99,891.72, 149,787.42 and 33,308.28

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Solution

The fourth proportional to 99,891.72, 149,787.42 and 33,308.28 is: 49,945.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,891.72 : 149,787.42 = 33,308.28 : x
  2. Step 2: Convert to fraction form
    99,891.72/149,787.42 = 33,308.28/x
  3. Step 3: Cross multiply
    99,891.72x = 149,787.42 × 33,308.28
  4. Step 4: Simplify right side
    99,891.72x = 4,989,161,325.84
  5. Step 5: Solve for x
    x = 4,989,161,325.84/99,891.72
  6. Step 6: Final answer
    x = 49,945.69

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1.5x scale

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.