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Finding the Fourth Proportional to 101,709.57, 140,355.41 and 56,994.69

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Solution

The fourth proportional to 101,709.57, 140,355.41 and 56,994.69 is: 78,650.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,709.57 : 140,355.41 = 56,994.69 : x
  2. Step 2: Convert to fraction form
    101,709.57/140,355.41 = 56,994.69/x
  3. Step 3: Cross multiply
    101,709.57x = 140,355.41 × 56,994.69
  4. Step 4: Simplify right side
    101,709.57x = 7,999,512,797.80
  5. Step 5: Solve for x
    x = 7,999,512,797.80/101,709.57
  6. Step 6: Final answer
    x = 78,650.54

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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.