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Finding the Fourth Proportional to 99,003.84, 136,624.44 and 55,991.78

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Solution

The fourth proportional to 99,003.84, 136,624.44 and 55,991.78 is: 77,268.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,003.84 : 136,624.44 = 55,991.78 : x
  2. Step 2: Convert to fraction form
    99,003.84/136,624.44 = 55,991.78/x
  3. Step 3: Cross multiply
    99,003.84x = 136,624.44 × 55,991.78
  4. Step 4: Simplify right side
    99,003.84x = 7,649,844,903.98
  5. Step 5: Solve for x
    x = 7,649,844,903.98/99,003.84
  6. Step 6: Final answer
    x = 77,268.16

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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.