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Finding the Fourth Proportional to 47,640.40, 65,747.79 and 26,426.50

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Solution

The fourth proportional to 47,640.40, 65,747.79 and 26,426.50 is: 36,470.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,640.40 : 65,747.79 = 26,426.50 : x
  2. Step 2: Convert to fraction form
    47,640.40/65,747.79 = 26,426.50/x
  3. Step 3: Cross multiply
    47,640.40x = 65,747.79 × 26,426.50
  4. Step 4: Simplify right side
    47,640.40x = 1,737,483,972.44
  5. Step 5: Solve for x
    x = 1,737,483,972.44/47,640.40
  6. Step 6: Final answer
    x = 36,470.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.