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Finding the Fourth Proportional to 99,713.97, 149,494.28 and 51,631.05

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Solution

The fourth proportional to 99,713.97, 149,494.28 and 51,631.05 is: 77,406.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,713.97 : 149,494.28 = 51,631.05 : x
  2. Step 2: Convert to fraction form
    99,713.97/149,494.28 = 51,631.05/x
  3. Step 3: Cross multiply
    99,713.97x = 149,494.28 × 51,631.05
  4. Step 4: Simplify right side
    99,713.97x = 7,718,546,947.84
  5. Step 5: Solve for x
    x = 7,718,546,947.84/99,713.97
  6. Step 6: Final answer
    x = 77,406.88

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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.