Home / 90,583.26-135,781.83-31,386.48

Finding the Fourth Proportional to 90,583.26, 135,781.83 and 31,386.48

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Solution

The fourth proportional to 90,583.26, 135,781.83 and 31,386.48 is: 47,047.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,583.26 : 135,781.83 = 31,386.48 : x
  2. Step 2: Convert to fraction form
    90,583.26/135,781.83 = 31,386.48/x
  3. Step 3: Cross multiply
    90,583.26x = 135,781.83 × 31,386.48
  4. Step 4: Simplify right side
    90,583.26x = 4,261,713,691.66
  5. Step 5: Solve for x
    x = 4,261,713,691.66/90,583.26
  6. Step 6: Final answer
    x = 47,047.48

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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.