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Finding the Fourth Proportional to 135,756.84, 203,664.48 and 40,979.10

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Solution

The fourth proportional to 135,756.84, 203,664.48 and 40,979.10 is: 61,477.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,756.84 : 203,664.48 = 40,979.10 : x
  2. Step 2: Convert to fraction form
    135,756.84/203,664.48 = 40,979.10/x
  3. Step 3: Cross multiply
    135,756.84x = 203,664.48 × 40,979.10
  4. Step 4: Simplify right side
    135,756.84x = 8,345,987,092.37
  5. Step 5: Solve for x
    x = 8,345,987,092.37/135,756.84
  6. Step 6: Final answer
    x = 61,477.47

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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.