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Finding the Fourth Proportional to 76,228.52, 105,159.93 and 49,380.08

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Solution

The fourth proportional to 76,228.52, 105,159.93 and 49,380.08 is: 68,121.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,228.52 : 105,159.93 = 49,380.08 : x
  2. Step 2: Convert to fraction form
    76,228.52/105,159.93 = 49,380.08/x
  3. Step 3: Cross multiply
    76,228.52x = 105,159.93 × 49,380.08
  4. Step 4: Simplify right side
    76,228.52x = 5,192,805,756.19
  5. Step 5: Solve for x
    x = 5,192,805,756.19/76,228.52
  6. Step 6: Final answer
    x = 68,121.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.