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Finding the Fourth Proportional to 7,136,671.21, 9,848,342.75 and 3,873,415.86

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Solution

The fourth proportional to 7,136,671.21, 9,848,342.75 and 3,873,415.86 is: 5,345,170.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,136,671.21 : 9,848,342.75 = 3,873,415.86 : x
  2. Step 2: Convert to fraction form
    7,136,671.21/9,848,342.75 = 3,873,415.86/x
  3. Step 3: Cross multiply
    7,136,671.21x = 9,848,342.75 × 3,873,415.86
  4. Step 4: Simplify right side
    7,136,671.21x = 38,146,726,983,198.93
  5. Step 5: Solve for x
    x = 38,146,726,983,198.93/7,136,671.21
  6. Step 6: Final answer
    x = 5,345,170.86

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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.