Home / 81,054.45-121,587.81-21,889.26

Finding the Fourth Proportional to 81,054.45, 121,587.81 and 21,889.26

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Solution

The fourth proportional to 81,054.45, 121,587.81 and 21,889.26 is: 32,835.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,054.45 : 121,587.81 = 21,889.26 : x
  2. Step 2: Convert to fraction form
    81,054.45/121,587.81 = 21,889.26/x
  3. Step 3: Cross multiply
    81,054.45x = 121,587.81 × 21,889.26
  4. Step 4: Simplify right side
    81,054.45x = 2,661,467,185.92
  5. Step 5: Solve for x
    x = 2,661,467,185.92/81,054.45
  6. Step 6: Final answer
    x = 32,835.55

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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.