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Finding the Fourth Proportional to 67,492.80, 101,237.76 and 20,744.64

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Solution

The fourth proportional to 67,492.80, 101,237.76 and 20,744.64 is: 31,116.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,492.80 : 101,237.76 = 20,744.64 : x
  2. Step 2: Convert to fraction form
    67,492.80/101,237.76 = 20,744.64/x
  3. Step 3: Cross multiply
    67,492.80x = 101,237.76 × 20,744.64
  4. Step 4: Simplify right side
    67,492.80x = 2,100,140,885.61
  5. Step 5: Solve for x
    x = 2,100,140,885.61/67,492.80
  6. Step 6: Final answer
    x = 31,116.52

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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.