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Finding the Fourth Proportional to 72,049.20, 100,635.60 and 72,049.20

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Solution

The fourth proportional to 72,049.20, 100,635.60 and 72,049.20 is: 100,635.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,049.20 : 100,635.60 = 72,049.20 : x
  2. Step 2: Convert to fraction form
    72,049.20/100,635.60 = 72,049.20/x
  3. Step 3: Cross multiply
    72,049.20x = 100,635.60 × 72,049.20
  4. Step 4: Simplify right side
    72,049.20x = 7,250,714,471.52
  5. Step 5: Solve for x
    x = 7,250,714,471.52/72,049.20
  6. Step 6: Final answer
    x = 100,635.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.