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Finding the Fourth Proportional to 67,015.60, 100,600.20 and 39,329.20

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Solution

The fourth proportional to 67,015.60, 100,600.20 and 39,329.20 is: 59,038.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,015.60 : 100,600.20 = 39,329.20 : x
  2. Step 2: Convert to fraction form
    67,015.60/100,600.20 = 39,329.20/x
  3. Step 3: Cross multiply
    67,015.60x = 100,600.20 × 39,329.20
  4. Step 4: Simplify right side
    67,015.60x = 3,956,525,385.84
  5. Step 5: Solve for x
    x = 3,956,525,385.84/67,015.60
  6. Step 6: Final answer
    x = 59,038.87

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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.