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Finding the Fourth Proportional to 70,612.70, 105,846.15 and 50,822.78

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Solution

The fourth proportional to 70,612.70, 105,846.15 and 50,822.78 is: 76,181.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,612.70 : 105,846.15 = 50,822.78 : x
  2. Step 2: Convert to fraction form
    70,612.70/105,846.15 = 50,822.78/x
  3. Step 3: Cross multiply
    70,612.70x = 105,846.15 × 50,822.78
  4. Step 4: Simplify right side
    70,612.70x = 5,379,395,595.30
  5. Step 5: Solve for x
    x = 5,379,395,595.30/70,612.70
  6. Step 6: Final answer
    x = 76,181.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.