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Finding the Fourth Proportional to 68,558.94, 102,831.93 and 21,803.58

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Solution

The fourth proportional to 68,558.94, 102,831.93 and 21,803.58 is: 32,703.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,558.94 : 102,831.93 = 21,803.58 : x
  2. Step 2: Convert to fraction form
    68,558.94/102,831.93 = 21,803.58/x
  3. Step 3: Cross multiply
    68,558.94x = 102,831.93 × 21,803.58
  4. Step 4: Simplify right side
    68,558.94x = 2,242,104,212.31
  5. Step 5: Solve for x
    x = 2,242,104,212.31/68,558.94
  6. Step 6: Final answer
    x = 32,703.31

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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.