Home / 90,633.90-135,732.08-54,506.46

Finding the Fourth Proportional to 90,633.90, 135,732.08 and 54,506.46

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Solution

The fourth proportional to 90,633.90, 135,732.08 and 54,506.46 is: 81,628.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,633.90 : 135,732.08 = 54,506.46 : x
  2. Step 2: Convert to fraction form
    90,633.90/135,732.08 = 54,506.46/x
  3. Step 3: Cross multiply
    90,633.90x = 135,732.08 × 54,506.46
  4. Step 4: Simplify right side
    90,633.90x = 7,398,275,189.24
  5. Step 5: Solve for x
    x = 7,398,275,189.24/90,633.90
  6. Step 6: Final answer
    x = 81,628.12

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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.