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Finding the Fourth Proportional to 41,978.01, 62,966.96 and 28,790.40

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Solution

The fourth proportional to 41,978.01, 62,966.96 and 28,790.40 is: 43,185.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,978.01 : 62,966.96 = 28,790.40 : x
  2. Step 2: Convert to fraction form
    41,978.01/62,966.96 = 28,790.40/x
  3. Step 3: Cross multiply
    41,978.01x = 62,966.96 × 28,790.40
  4. Step 4: Simplify right side
    41,978.01x = 1,812,843,821.23
  5. Step 5: Solve for x
    x = 1,812,843,821.23/41,978.01
  6. Step 6: Final answer
    x = 43,185.56

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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.