Home / 90,578.05-135,890.57-34,419.13

Finding the Fourth Proportional to 90,578.05, 135,890.57 and 34,419.13

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Solution

The fourth proportional to 90,578.05, 135,890.57 and 34,419.13 is: 51,637.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,578.05 : 135,890.57 = 34,419.13 : x
  2. Step 2: Convert to fraction form
    90,578.05/135,890.57 = 34,419.13/x
  3. Step 3: Cross multiply
    90,578.05x = 135,890.57 × 34,419.13
  4. Step 4: Simplify right side
    90,578.05x = 4,677,235,194.60
  5. Step 5: Solve for x
    x = 4,677,235,194.60/90,578.05
  6. Step 6: Final answer
    x = 51,637.62

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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.