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Finding the Fourth Proportional to 67,400.35, 101,114.88 and 20,015.58

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Solution

The fourth proportional to 67,400.35, 101,114.88 and 20,015.58 is: 30,027.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,400.35 : 101,114.88 = 20,015.58 : x
  2. Step 2: Convert to fraction form
    67,400.35/101,114.88 = 20,015.58/x
  3. Step 3: Cross multiply
    67,400.35x = 101,114.88 × 20,015.58
  4. Step 4: Simplify right side
    67,400.35x = 2,023,872,969.83
  5. Step 5: Solve for x
    x = 2,023,872,969.83/67,400.35
  6. Step 6: Final answer
    x = 30,027.63

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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.