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Finding the Fourth Proportional to 45,409.68, 68,020.74 and 26,633.21

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Solution

The fourth proportional to 45,409.68, 68,020.74 and 26,633.21 is: 39,894.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,409.68 : 68,020.74 = 26,633.21 : x
  2. Step 2: Convert to fraction form
    45,409.68/68,020.74 = 26,633.21/x
  3. Step 3: Cross multiply
    45,409.68x = 68,020.74 × 26,633.21
  4. Step 4: Simplify right side
    45,409.68x = 1,811,610,312.67
  5. Step 5: Solve for x
    x = 1,811,610,312.67/45,409.68
  6. Step 6: Final answer
    x = 39,894.80

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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.