Home / 99,631.38-137,490.41-54,309.36

Finding the Fourth Proportional to 99,631.38, 137,490.41 and 54,309.36

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Solution

The fourth proportional to 99,631.38, 137,490.41 and 54,309.36 is: 74,946.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,631.38 : 137,490.41 = 54,309.36 : x
  2. Step 2: Convert to fraction form
    99,631.38/137,490.41 = 54,309.36/x
  3. Step 3: Cross multiply
    99,631.38x = 137,490.41 × 54,309.36
  4. Step 4: Simplify right side
    99,631.38x = 7,467,015,901.69
  5. Step 5: Solve for x
    x = 7,467,015,901.69/99,631.38
  6. Step 6: Final answer
    x = 74,946.43

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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.