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Finding the Fourth Proportional to 68,778.42, 94,960.44 and 42,976.32

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Solution

The fourth proportional to 68,778.42, 94,960.44 and 42,976.32 is: 59,336.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,778.42 : 94,960.44 = 42,976.32 : x
  2. Step 2: Convert to fraction form
    68,778.42/94,960.44 = 42,976.32/x
  3. Step 3: Cross multiply
    68,778.42x = 94,960.44 × 42,976.32
  4. Step 4: Simplify right side
    68,778.42x = 4,081,050,256.78
  5. Step 5: Solve for x
    x = 4,081,050,256.78/68,778.42
  6. Step 6: Final answer
    x = 59,336.20

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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.