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Finding the Fourth Proportional to 77,596.61, 116,476.36 and 68,768.42

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Solution

The fourth proportional to 77,596.61, 116,476.36 and 68,768.42 is: 103,224.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,596.61 : 116,476.36 = 68,768.42 : x
  2. Step 2: Convert to fraction form
    77,596.61/116,476.36 = 68,768.42/x
  3. Step 3: Cross multiply
    77,596.61x = 116,476.36 × 68,768.42
  4. Step 4: Simplify right side
    77,596.61x = 8,009,895,621.70
  5. Step 5: Solve for x
    x = 8,009,895,621.70/77,596.61
  6. Step 6: Final answer
    x = 103,224.81

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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.