Home / 72,361,997.37-108,547,133.79-20,542,546.86

Finding the Fourth Proportional to 72,361,997.37, 108,547,133.79 and 20,542,546.86

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Solution

The fourth proportional to 72,361,997.37, 108,547,133.79 and 20,542,546.86 is: 30,814,994.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,361,997.37 : 108,547,133.79 = 20,542,546.86 : x
  2. Step 2: Convert to fraction form
    72,361,997.37/108,547,133.79 = 20,542,546.86/x
  3. Step 3: Cross multiply
    72,361,997.37x = 108,547,133.79 × 20,542,546.86
  4. Step 4: Simplify right side
    72,361,997.37x = 2,229,834,582,399,764.50
  5. Step 5: Solve for x
    x = 2,229,834,582,399,764.50/72,361,997.37
  6. Step 6: Final answer
    x = 30,814,994.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.