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Finding the Fourth Proportional to 43,362.56, 65,042.90 and 19,988.98

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Solution

The fourth proportional to 43,362.56, 65,042.90 and 19,988.98 is: 29,983.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,362.56 : 65,042.90 = 19,988.98 : x
  2. Step 2: Convert to fraction form
    43,362.56/65,042.90 = 19,988.98/x
  3. Step 3: Cross multiply
    43,362.56x = 65,042.90 × 19,988.98
  4. Step 4: Simplify right side
    43,362.56x = 1,300,141,227.24
  5. Step 5: Solve for x
    x = 1,300,141,227.24/43,362.56
  6. Step 6: Final answer
    x = 29,983.04

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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.