Home / 72,380.61-108,533.88-30,249.18

Finding the Fourth Proportional to 72,380.61, 108,533.88 and 30,249.18

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Solution

The fourth proportional to 72,380.61, 108,533.88 and 30,249.18 is: 45,358.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,380.61 : 108,533.88 = 30,249.18 : x
  2. Step 2: Convert to fraction form
    72,380.61/108,533.88 = 30,249.18/x
  3. Step 3: Cross multiply
    72,380.61x = 108,533.88 × 30,249.18
  4. Step 4: Simplify right side
    72,380.61x = 3,283,060,872.22
  5. Step 5: Solve for x
    x = 3,283,060,872.22/72,380.61
  6. Step 6: Final answer
    x = 45,358.29

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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.