Home / 90,012.96-135,021.60-27,684

Finding the Fourth Proportional to 90,012.96, 135,021.60 and 27,684

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Solution

The fourth proportional to 90,012.96, 135,021.60 and 27,684 is: 41,526.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,012.96 : 135,021.60 = 27,684 : x
  2. Step 2: Convert to fraction form
    90,012.96/135,021.60 = 27,684/x
  3. Step 3: Cross multiply
    90,012.96x = 135,021.60 × 27,684
  4. Step 4: Simplify right side
    90,012.96x = 3,737,937,974.40
  5. Step 5: Solve for x
    x = 3,737,937,974.40/90,012.96
  6. Step 6: Final answer
    x = 41,526.66

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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.