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Finding the Fourth Proportional to 70,936.58, 97,891.82 and 38,671.20

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Solution

The fourth proportional to 70,936.58, 97,891.82 and 38,671.20 is: 53,365.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,936.58 : 97,891.82 = 38,671.20 : x
  2. Step 2: Convert to fraction form
    70,936.58/97,891.82 = 38,671.20/x
  3. Step 3: Cross multiply
    70,936.58x = 97,891.82 × 38,671.20
  4. Step 4: Simplify right side
    70,936.58x = 3,785,594,149.58
  5. Step 5: Solve for x
    x = 3,785,594,149.58/70,936.58
  6. Step 6: Final answer
    x = 53,365.90

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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.