Home / 81,263.24-121,837.62-31,301.48

Finding the Fourth Proportional to 81,263.24, 121,837.62 and 31,301.48

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Solution

The fourth proportional to 81,263.24, 121,837.62 and 31,301.48 is: 46,930.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,263.24 : 121,837.62 = 31,301.48 : x
  2. Step 2: Convert to fraction form
    81,263.24/121,837.62 = 31,301.48/x
  3. Step 3: Cross multiply
    81,263.24x = 121,837.62 × 31,301.48
  4. Step 4: Simplify right side
    81,263.24x = 3,813,697,825.68
  5. Step 5: Solve for x
    x = 3,813,697,825.68/81,263.24
  6. Step 6: Final answer
    x = 46,930.17

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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.