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Finding the Fourth Proportional to 45,441.40, 68,137.80 and 19,116.40

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Solution

The fourth proportional to 45,441.40, 68,137.80 and 19,116.40 is: 28,664.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,441.40 : 68,137.80 = 19,116.40 : x
  2. Step 2: Convert to fraction form
    45,441.40/68,137.80 = 19,116.40/x
  3. Step 3: Cross multiply
    45,441.40x = 68,137.80 × 19,116.40
  4. Step 4: Simplify right side
    45,441.40x = 1,302,549,439.92
  5. Step 5: Solve for x
    x = 1,302,549,439.92/45,441.40
  6. Step 6: Final answer
    x = 28,664.38

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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.