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Finding the Fourth Proportional to 70,243.39, 96,936.39 and 39,616.88

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Solution

The fourth proportional to 70,243.39, 96,936.39 and 39,616.88 is: 54,671.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,243.39 : 96,936.39 = 39,616.88 : x
  2. Step 2: Convert to fraction form
    70,243.39/96,936.39 = 39,616.88/x
  3. Step 3: Cross multiply
    70,243.39x = 96,936.39 × 39,616.88
  4. Step 4: Simplify right side
    70,243.39x = 3,840,317,132.18
  5. Step 5: Solve for x
    x = 3,840,317,132.18/70,243.39
  6. Step 6: Final answer
    x = 54,671.58

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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.