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Finding the Fourth Proportional to 43,693.78, 65,390.07 and 26,815.58

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Solution

The fourth proportional to 43,693.78, 65,390.07 and 26,815.58 is: 40,130.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,693.78 : 65,390.07 = 26,815.58 : x
  2. Step 2: Convert to fraction form
    43,693.78/65,390.07 = 26,815.58/x
  3. Step 3: Cross multiply
    43,693.78x = 65,390.07 × 26,815.58
  4. Step 4: Simplify right side
    43,693.78x = 1,753,472,653.29
  5. Step 5: Solve for x
    x = 1,753,472,653.29/43,693.78
  6. Step 6: Final answer
    x = 40,130.94

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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.