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Finding the Fourth Proportional to 68,640, 94,657.92 and 44,784.96

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Solution

The fourth proportional to 68,640, 94,657.92 and 44,784.96 is: 61,760.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,640 : 94,657.92 = 44,784.96 : x
  2. Step 2: Convert to fraction form
    68,640/94,657.92 = 44,784.96/x
  3. Step 3: Cross multiply
    68,640x = 94,657.92 × 44,784.96
  4. Step 4: Simplify right side
    68,640x = 4,239,251,160.88
  5. Step 5: Solve for x
    x = 4,239,251,160.88/68,640
  6. Step 6: Final answer
    x = 61,760.65

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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.