Home / 40,808.70-61,269.21-21,100.86

Finding the Fourth Proportional to 40,808.70, 61,269.21 and 21,100.86

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Solution

The fourth proportional to 40,808.70, 61,269.21 and 21,100.86 is: 31,680.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,808.70 : 61,269.21 = 21,100.86 : x
  2. Step 2: Convert to fraction form
    40,808.70/61,269.21 = 21,100.86/x
  3. Step 3: Cross multiply
    40,808.70x = 61,269.21 × 21,100.86
  4. Step 4: Simplify right side
    40,808.70x = 1,292,833,022.52
  5. Step 5: Solve for x
    x = 1,292,833,022.52/40,808.70
  6. Step 6: Final answer
    x = 31,680.33

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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.