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Finding the Fourth Proportional to 71,660.22, 107,492.75 and 19,069.76

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Solution

The fourth proportional to 71,660.22, 107,492.75 and 19,069.76 is: 28,605.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,660.22 : 107,492.75 = 19,069.76 : x
  2. Step 2: Convert to fraction form
    71,660.22/107,492.75 = 19,069.76/x
  3. Step 3: Cross multiply
    71,660.22x = 107,492.75 × 19,069.76
  4. Step 4: Simplify right side
    71,660.22x = 2,049,860,454.45
  5. Step 5: Solve for x
    x = 2,049,860,454.45/71,660.22
  6. Step 6: Final answer
    x = 28,605.28

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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.