Home / 72,829.16-100,500.42-40,997

Finding the Fourth Proportional to 72,829.16, 100,500.42 and 40,997

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Solution

The fourth proportional to 72,829.16, 100,500.42 and 40,997 is: 56,573.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,829.16 : 100,500.42 = 40,997 : x
  2. Step 2: Convert to fraction form
    72,829.16/100,500.42 = 40,997/x
  3. Step 3: Cross multiply
    72,829.16x = 100,500.42 × 40,997
  4. Step 4: Simplify right side
    72,829.16x = 4,120,215,718.74
  5. Step 5: Solve for x
    x = 4,120,215,718.74/72,829.16
  6. Step 6: Final answer
    x = 56,573.71

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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.