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Finding the Fourth Proportional to 83,994.66, 125,988.83 and 20,814.96

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Solution

The fourth proportional to 83,994.66, 125,988.83 and 20,814.96 is: 31,221.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,994.66 : 125,988.83 = 20,814.96 : x
  2. Step 2: Convert to fraction form
    83,994.66/125,988.83 = 20,814.96/x
  3. Step 3: Cross multiply
    83,994.66x = 125,988.83 × 20,814.96
  4. Step 4: Simplify right side
    83,994.66x = 2,622,452,352.82
  5. Step 5: Solve for x
    x = 2,622,452,352.82/83,994.66
  6. Step 6: Final answer
    x = 31,221.66

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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.