Home / 81,054.21-121,585.91-21,894.58

Finding the Fourth Proportional to 81,054.21, 121,585.91 and 21,894.58

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Solution

The fourth proportional to 81,054.21, 121,585.91 and 21,894.58 is: 32,843.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,054.21 : 121,585.91 = 21,894.58 : x
  2. Step 2: Convert to fraction form
    81,054.21/121,585.91 = 21,894.58/x
  3. Step 3: Cross multiply
    81,054.21x = 121,585.91 × 21,894.58
  4. Step 4: Simplify right side
    81,054.21x = 2,662,072,433.37
  5. Step 5: Solve for x
    x = 2,662,072,433.37/81,054.21
  6. Step 6: Final answer
    x = 32,843.11

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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.