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Finding the Fourth Proportional to 67,492.78, 101,255.88 and 20,107.66

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Solution

The fourth proportional to 67,492.78, 101,255.88 and 20,107.66 is: 30,166.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,492.78 : 101,255.88 = 20,107.66 : x
  2. Step 2: Convert to fraction form
    67,492.78/101,255.88 = 20,107.66/x
  3. Step 3: Cross multiply
    67,492.78x = 101,255.88 × 20,107.66
  4. Step 4: Simplify right side
    67,492.78x = 2,036,018,808.04
  5. Step 5: Solve for x
    x = 2,036,018,808.04/67,492.78
  6. Step 6: Final answer
    x = 30,166.47

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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.