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Finding the Fourth Proportional to 99,539.78, 149,292.39 and 33,875.78

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Solution

The fourth proportional to 99,539.78, 149,292.39 and 33,875.78 is: 50,807.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,539.78 : 149,292.39 = 33,875.78 : x
  2. Step 2: Convert to fraction form
    99,539.78/149,292.39 = 33,875.78/x
  3. Step 3: Cross multiply
    99,539.78x = 149,292.39 × 33,875.78
  4. Step 4: Simplify right side
    99,539.78x = 5,057,396,159.31
  5. Step 5: Solve for x
    x = 5,057,396,159.31/99,539.78
  6. Step 6: Final answer
    x = 50,807.79

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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.