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Finding the Fourth Proportional to 45,345.40, 68,042.40 and 19,052.80

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Solution

The fourth proportional to 45,345.40, 68,042.40 and 19,052.80 is: 28,589.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,345.40 : 68,042.40 = 19,052.80 : x
  2. Step 2: Convert to fraction form
    45,345.40/68,042.40 = 19,052.80/x
  3. Step 3: Cross multiply
    45,345.40x = 68,042.40 × 19,052.80
  4. Step 4: Simplify right side
    45,345.40x = 1,296,398,238.72
  5. Step 5: Solve for x
    x = 1,296,398,238.72/45,345.40
  6. Step 6: Final answer
    x = 28,589.41

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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.