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Finding the Fourth Proportional to 48,940.80, 73,411.20 and 19,343.40

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Solution

The fourth proportional to 48,940.80, 73,411.20 and 19,343.40 is: 29,015.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,940.80 : 73,411.20 = 19,343.40 : x
  2. Step 2: Convert to fraction form
    48,940.80/73,411.20 = 19,343.40/x
  3. Step 3: Cross multiply
    48,940.80x = 73,411.20 × 19,343.40
  4. Step 4: Simplify right side
    48,940.80x = 1,420,022,206.08
  5. Step 5: Solve for x
    x = 1,420,022,206.08/48,940.80
  6. Step 6: Final answer
    x = 29,015.10

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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.