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Finding the Fourth Proportional to 99,016.80, 148,492.80 and 36,679.20

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Solution

The fourth proportional to 99,016.80, 148,492.80 and 36,679.20 is: 55,006.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,016.80 : 148,492.80 = 36,679.20 : x
  2. Step 2: Convert to fraction form
    99,016.80/148,492.80 = 36,679.20/x
  3. Step 3: Cross multiply
    99,016.80x = 148,492.80 × 36,679.20
  4. Step 4: Simplify right side
    99,016.80x = 5,446,597,109.76
  5. Step 5: Solve for x
    x = 5,446,597,109.76/99,016.80
  6. Step 6: Final answer
    x = 55,006.80

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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.