Home / 99,621.50-137,476.79-54,299.48

Finding the Fourth Proportional to 99,621.50, 137,476.79 and 54,299.48

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Solution

The fourth proportional to 99,621.50, 137,476.79 and 54,299.48 is: 74,932.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,621.50 : 137,476.79 = 54,299.48 : x
  2. Step 2: Convert to fraction form
    99,621.50/137,476.79 = 54,299.48/x
  3. Step 3: Cross multiply
    99,621.50x = 137,476.79 × 54,299.48
  4. Step 4: Simplify right side
    99,621.50x = 7,464,917,250.19
  5. Step 5: Solve for x
    x = 7,464,917,250.19/99,621.50
  6. Step 6: Final answer
    x = 74,932.80

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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.