Home / 90,828.36-136,045.62-43,983

Finding the Fourth Proportional to 90,828.36, 136,045.62 and 43,983

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Solution

The fourth proportional to 90,828.36, 136,045.62 and 43,983 is: 65,879.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,828.36 : 136,045.62 = 43,983 : x
  2. Step 2: Convert to fraction form
    90,828.36/136,045.62 = 43,983/x
  3. Step 3: Cross multiply
    90,828.36x = 136,045.62 × 43,983
  4. Step 4: Simplify right side
    90,828.36x = 5,983,694,504.46
  5. Step 5: Solve for x
    x = 5,983,694,504.46/90,828.36
  6. Step 6: Final answer
    x = 65,879.14

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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.