Home / 72,768.16-100,414.62-40,930.91

Finding the Fourth Proportional to 72,768.16, 100,414.62 and 40,930.91

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Solution

The fourth proportional to 72,768.16, 100,414.62 and 40,930.91 is: 56,481.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,768.16 : 100,414.62 = 40,930.91 : x
  2. Step 2: Convert to fraction form
    72,768.16/100,414.62 = 40,930.91/x
  3. Step 3: Cross multiply
    72,768.16x = 100,414.62 × 40,930.91
  4. Step 4: Simplify right side
    72,768.16x = 4,110,061,773.90
  5. Step 5: Solve for x
    x = 4,110,061,773.90/72,768.16
  6. Step 6: Final answer
    x = 56,481.60

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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.