Home / 72,914.14-100,621.50-39,380.14

Finding the Fourth Proportional to 72,914.14, 100,621.50 and 39,380.14

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Solution

The fourth proportional to 72,914.14, 100,621.50 and 39,380.14 is: 54,344.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,914.14 : 100,621.50 = 39,380.14 : x
  2. Step 2: Convert to fraction form
    72,914.14/100,621.50 = 39,380.14/x
  3. Step 3: Cross multiply
    72,914.14x = 100,621.50 × 39,380.14
  4. Step 4: Simplify right side
    72,914.14x = 3,962,488,757.01
  5. Step 5: Solve for x
    x = 3,962,488,757.01/72,914.14
  6. Step 6: Final answer
    x = 54,344.59

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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.