Home / 90,438.87-135,639.82-34,259.61

Finding the Fourth Proportional to 90,438.87, 135,639.82 and 34,259.61

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Solution

The fourth proportional to 90,438.87, 135,639.82 and 34,259.61 is: 51,382.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,438.87 : 135,639.82 = 34,259.61 : x
  2. Step 2: Convert to fraction form
    90,438.87/135,639.82 = 34,259.61/x
  3. Step 3: Cross multiply
    90,438.87x = 135,639.82 × 34,259.61
  4. Step 4: Simplify right side
    90,438.87x = 4,646,967,333.67
  5. Step 5: Solve for x
    x = 4,646,967,333.67/90,438.87
  6. Step 6: Final answer
    x = 51,382.41

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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.