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Finding the Fourth Proportional to 128,544.30, 192,871.62 and 49,713.84

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Solution

The fourth proportional to 128,544.30, 192,871.62 and 49,713.84 is: 74,592.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,544.30 : 192,871.62 = 49,713.84 : x
  2. Step 2: Convert to fraction form
    128,544.30/192,871.62 = 49,713.84/x
  3. Step 3: Cross multiply
    128,544.30x = 192,871.62 × 49,713.84
  4. Step 4: Simplify right side
    128,544.30x = 9,588,388,857.22
  5. Step 5: Solve for x
    x = 9,588,388,857.22/128,544.30
  6. Step 6: Final answer
    x = 74,592.10

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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.