Home / 90,634.34-135,919.08-34,459.49

Finding the Fourth Proportional to 90,634.34, 135,919.08 and 34,459.49

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Solution

The fourth proportional to 90,634.34, 135,919.08 and 34,459.49 is: 51,676.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,634.34 : 135,919.08 = 34,459.49 : x
  2. Step 2: Convert to fraction form
    90,634.34/135,919.08 = 34,459.49/x
  3. Step 3: Cross multiply
    90,634.34x = 135,919.08 × 34,459.49
  4. Step 4: Simplify right side
    90,634.34x = 4,683,702,517.87
  5. Step 5: Solve for x
    x = 4,683,702,517.87/90,634.34
  6. Step 6: Final answer
    x = 51,676.91

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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.