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Finding the Fourth Proportional to 68,108.86, 93,975.42 and 39,801.52

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Solution

The fourth proportional to 68,108.86, 93,975.42 and 39,801.52 is: 54,917.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,108.86 : 93,975.42 = 39,801.52 : x
  2. Step 2: Convert to fraction form
    68,108.86/93,975.42 = 39,801.52/x
  3. Step 3: Cross multiply
    68,108.86x = 93,975.42 × 39,801.52
  4. Step 4: Simplify right side
    68,108.86x = 3,740,364,558.64
  5. Step 5: Solve for x
    x = 3,740,364,558.64/68,108.86
  6. Step 6: Final answer
    x = 54,917.44

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1.5x scale

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.