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Finding the Fourth Proportional to 84,043, 126,066.93 and 21,713.50

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Solution

The fourth proportional to 84,043, 126,066.93 and 21,713.50 is: 32,570.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,043 : 126,066.93 = 21,713.50 : x
  2. Step 2: Convert to fraction form
    84,043/126,066.93 = 21,713.50/x
  3. Step 3: Cross multiply
    84,043x = 126,066.93 × 21,713.50
  4. Step 4: Simplify right side
    84,043x = 2,737,354,284.56
  5. Step 5: Solve for x
    x = 2,737,354,284.56/84,043
  6. Step 6: Final answer
    x = 32,570.88

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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.