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Finding the Fourth Proportional to 43,583.88, 65,397.90 and 19,888.80

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Solution

The fourth proportional to 43,583.88, 65,397.90 and 19,888.80 is: 29,843.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,583.88 : 65,397.90 = 19,888.80 : x
  2. Step 2: Convert to fraction form
    43,583.88/65,397.90 = 19,888.80/x
  3. Step 3: Cross multiply
    43,583.88x = 65,397.90 × 19,888.80
  4. Step 4: Simplify right side
    43,583.88x = 1,300,685,753.52
  5. Step 5: Solve for x
    x = 1,300,685,753.52/43,583.88
  6. Step 6: Final answer
    x = 29,843.28

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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.