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Finding the Fourth Proportional to 28,751.80, 43,102.10 and 25,641.40

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Solution

The fourth proportional to 28,751.80, 43,102.10 and 25,641.40 is: 38,439.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,751.80 : 43,102.10 = 25,641.40 : x
  2. Step 2: Convert to fraction form
    28,751.80/43,102.10 = 25,641.40/x
  3. Step 3: Cross multiply
    28,751.80x = 43,102.10 × 25,641.40
  4. Step 4: Simplify right side
    28,751.80x = 1,105,198,186.94
  5. Step 5: Solve for x
    x = 1,105,198,186.94/28,751.80
  6. Step 6: Final answer
    x = 38,439.27

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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.