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Finding the Fourth Proportional to 40,976.70, 61,462.62 and 14,320.82

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Solution

The fourth proportional to 40,976.70, 61,462.62 and 14,320.82 is: 21,480.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,976.70 : 61,462.62 = 14,320.82 : x
  2. Step 2: Convert to fraction form
    40,976.70/61,462.62 = 14,320.82/x
  3. Step 3: Cross multiply
    40,976.70x = 61,462.62 × 14,320.82
  4. Step 4: Simplify right side
    40,976.70x = 880,194,810.44
  5. Step 5: Solve for x
    x = 880,194,810.44/40,976.70
  6. Step 6: Final answer
    x = 21,480.37

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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.