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Finding the Fourth Proportional to 83,497.97, 125,245.11 and 20,318.51

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Solution

The fourth proportional to 83,497.97, 125,245.11 and 20,318.51 is: 30,477.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,497.97 : 125,245.11 = 20,318.51 : x
  2. Step 2: Convert to fraction form
    83,497.97/125,245.11 = 20,318.51/x
  3. Step 3: Cross multiply
    83,497.97x = 125,245.11 × 20,318.51
  4. Step 4: Simplify right side
    83,497.97x = 2,544,793,393.76
  5. Step 5: Solve for x
    x = 2,544,793,393.76/83,497.97
  6. Step 6: Final answer
    x = 30,477.31

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1.5x scale

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.