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Finding the Fourth Proportional to 43,952.40, 65,930.40 and 12,787.65

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Solution

The fourth proportional to 43,952.40, 65,930.40 and 12,787.65 is: 19,182.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,952.40 : 65,930.40 = 12,787.65 : x
  2. Step 2: Convert to fraction form
    43,952.40/65,930.40 = 12,787.65/x
  3. Step 3: Cross multiply
    43,952.40x = 65,930.40 × 12,787.65
  4. Step 4: Simplify right side
    43,952.40x = 843,094,879.56
  5. Step 5: Solve for x
    x = 843,094,879.56/43,952.40
  6. Step 6: Final answer
    x = 19,182.00

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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.