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Finding the Fourth Proportional to 45,755.31, 68,532.98 and 19,020.24

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Solution

The fourth proportional to 45,755.31, 68,532.98 and 19,020.24 is: 28,488.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,755.31 : 68,532.98 = 19,020.24 : x
  2. Step 2: Convert to fraction form
    45,755.31/68,532.98 = 19,020.24/x
  3. Step 3: Cross multiply
    45,755.31x = 68,532.98 × 19,020.24
  4. Step 4: Simplify right side
    45,755.31x = 1,303,513,727.52
  5. Step 5: Solve for x
    x = 1,303,513,727.52/45,755.31
  6. Step 6: Final answer
    x = 28,488.80

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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.