Home / 90,569.45-135,816.25-34,378.59

Finding the Fourth Proportional to 90,569.45, 135,816.25 and 34,378.59

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Solution

The fourth proportional to 90,569.45, 135,816.25 and 34,378.59 is: 51,553.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,569.45 : 135,816.25 = 34,378.59 : x
  2. Step 2: Convert to fraction form
    90,569.45/135,816.25 = 34,378.59/x
  3. Step 3: Cross multiply
    90,569.45x = 135,816.25 × 34,378.59
  4. Step 4: Simplify right side
    90,569.45x = 4,669,171,174.09
  5. Step 5: Solve for x
    x = 4,669,171,174.09/90,569.45
  6. Step 6: Final answer
    x = 51,553.49

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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.