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Finding the Fourth Proportional to 45,492.80, 68,175.20 and 36,148.80

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Solution

The fourth proportional to 45,492.80, 68,175.20 and 36,148.80 is: 54,172.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,492.80 : 68,175.20 = 36,148.80 : x
  2. Step 2: Convert to fraction form
    45,492.80/68,175.20 = 36,148.80/x
  3. Step 3: Cross multiply
    45,492.80x = 68,175.20 × 36,148.80
  4. Step 4: Simplify right side
    45,492.80x = 2,464,451,669.76
  5. Step 5: Solve for x
    x = 2,464,451,669.76/45,492.80
  6. Step 6: Final answer
    x = 54,172.35

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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.