Home / 72,610.28-100,198.50-40,780.52

Finding the Fourth Proportional to 72,610.28, 100,198.50 and 40,780.52

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Solution

The fourth proportional to 72,610.28, 100,198.50 and 40,780.52 is: 56,275.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,610.28 : 100,198.50 = 40,780.52 : x
  2. Step 2: Convert to fraction form
    72,610.28/100,198.50 = 40,780.52/x
  3. Step 3: Cross multiply
    72,610.28x = 100,198.50 × 40,780.52
  4. Step 4: Simplify right side
    72,610.28x = 4,086,146,933.22
  5. Step 5: Solve for x
    x = 4,086,146,933.22/72,610.28
  6. Step 6: Final answer
    x = 56,275.05

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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.