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Finding the Fourth Proportional to 40,640.70, 60,980.22 and 14,357.82

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Solution

The fourth proportional to 40,640.70, 60,980.22 and 14,357.82 is: 21,543.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,640.70 : 60,980.22 = 14,357.82 : x
  2. Step 2: Convert to fraction form
    40,640.70/60,980.22 = 14,357.82/x
  3. Step 3: Cross multiply
    40,640.70x = 60,980.22 × 14,357.82
  4. Step 4: Simplify right side
    40,640.70x = 875,543,022.32
  5. Step 5: Solve for x
    x = 875,543,022.32/40,640.70
  6. Step 6: Final answer
    x = 21,543.50

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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.