Home / 72,610.29-100,203.21-40,778.64

Finding the Fourth Proportional to 72,610.29, 100,203.21 and 40,778.64

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Solution

The fourth proportional to 72,610.29, 100,203.21 and 40,778.64 is: 56,275.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,610.29 : 100,203.21 = 40,778.64 : x
  2. Step 2: Convert to fraction form
    72,610.29/100,203.21 = 40,778.64/x
  3. Step 3: Cross multiply
    72,610.29x = 100,203.21 × 40,778.64
  4. Step 4: Simplify right side
    72,610.29x = 4,086,150,627.43
  5. Step 5: Solve for x
    x = 4,086,150,627.43/72,610.29
  6. Step 6: Final answer
    x = 56,275.09

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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.