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Finding the Fourth Proportional to 71,875.94, 107,811.48 and 21,954.02

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Solution

The fourth proportional to 71,875.94, 107,811.48 and 21,954.02 is: 32,930.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,875.94 : 107,811.48 = 21,954.02 : x
  2. Step 2: Convert to fraction form
    71,875.94/107,811.48 = 21,954.02/x
  3. Step 3: Cross multiply
    71,875.94x = 107,811.48 × 21,954.02
  4. Step 4: Simplify right side
    71,875.94x = 2,366,895,388.15
  5. Step 5: Solve for x
    x = 2,366,895,388.15/71,875.94
  6. Step 6: Final answer
    x = 32,930.29

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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.