Home / 72,910.02-109,380.28-30,790.20

Finding the Fourth Proportional to 72,910.02, 109,380.28 and 30,790.20

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Solution

The fourth proportional to 72,910.02, 109,380.28 and 30,790.20 is: 46,191.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,910.02 : 109,380.28 = 30,790.20 : x
  2. Step 2: Convert to fraction form
    72,910.02/109,380.28 = 30,790.20/x
  3. Step 3: Cross multiply
    72,910.02x = 109,380.28 × 30,790.20
  4. Step 4: Simplify right side
    72,910.02x = 3,367,840,697.26
  5. Step 5: Solve for x
    x = 3,367,840,697.26/72,910.02
  6. Step 6: Final answer
    x = 46,191.74

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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.