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Finding the Fourth Proportional to 68,997.60, 95,212.80 and 40,712.40

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Solution

The fourth proportional to 68,997.60, 95,212.80 and 40,712.40 is: 56,180.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,997.60 : 95,212.80 = 40,712.40 : x
  2. Step 2: Convert to fraction form
    68,997.60/95,212.80 = 40,712.40/x
  3. Step 3: Cross multiply
    68,997.60x = 95,212.80 × 40,712.40
  4. Step 4: Simplify right side
    68,997.60x = 3,876,341,598.72
  5. Step 5: Solve for x
    x = 3,876,341,598.72/68,997.60
  6. Step 6: Final answer
    x = 56,180.82

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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.