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Finding the Fourth Proportional to 40,675.70, 60,990.19 and 21,676.95

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Solution

The fourth proportional to 40,675.70, 60,990.19 and 21,676.95 is: 32,502.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,675.70 : 60,990.19 = 21,676.95 : x
  2. Step 2: Convert to fraction form
    40,675.70/60,990.19 = 21,676.95/x
  3. Step 3: Cross multiply
    40,675.70x = 60,990.19 × 21,676.95
  4. Step 4: Simplify right side
    40,675.70x = 1,322,081,097.50
  5. Step 5: Solve for x
    x = 1,322,081,097.50/40,675.70
  6. Step 6: Final answer
    x = 32,502.97

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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.