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Finding the Fourth Proportional to 71,994.76, 107,977.56 and 19,391.95

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Solution

The fourth proportional to 71,994.76, 107,977.56 and 19,391.95 is: 29,084.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,994.76 : 107,977.56 = 19,391.95 : x
  2. Step 2: Convert to fraction form
    71,994.76/107,977.56 = 19,391.95/x
  3. Step 3: Cross multiply
    71,994.76x = 107,977.56 × 19,391.95
  4. Step 4: Simplify right side
    71,994.76x = 2,093,895,444.64
  5. Step 5: Solve for x
    x = 2,093,895,444.64/71,994.76
  6. Step 6: Final answer
    x = 29,084.00

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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.