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Finding the Fourth Proportional to 85,249.78, 117,630.90 and 49,432.84

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Solution

The fourth proportional to 85,249.78, 117,630.90 and 49,432.84 is: 68,209.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,249.78 : 117,630.90 = 49,432.84 : x
  2. Step 2: Convert to fraction form
    85,249.78/117,630.90 = 49,432.84/x
  3. Step 3: Cross multiply
    85,249.78x = 117,630.90 × 49,432.84
  4. Step 4: Simplify right side
    85,249.78x = 5,814,829,458.76
  5. Step 5: Solve for x
    x = 5,814,829,458.76/85,249.78
  6. Step 6: Final answer
    x = 68,209.32

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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.