Home / 90,072.88-135,194.04-45,731.48

Finding the Fourth Proportional to 90,072.88, 135,194.04 and 45,731.48

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Solution

The fourth proportional to 90,072.88, 135,194.04 and 45,731.48 is: 68,640.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,072.88 : 135,194.04 = 45,731.48 : x
  2. Step 2: Convert to fraction form
    90,072.88/135,194.04 = 45,731.48/x
  3. Step 3: Cross multiply
    90,072.88x = 135,194.04 × 45,731.48
  4. Step 4: Simplify right side
    90,072.88x = 6,182,623,536.38
  5. Step 5: Solve for x
    x = 6,182,623,536.38/90,072.88
  6. Step 6: Final answer
    x = 68,640.23

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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.