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Finding the Fourth Proportional to 30,440.68, 45,663.19 and 8,253.65

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Solution

The fourth proportional to 30,440.68, 45,663.19 and 8,253.65 is: 12,381.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,440.68 : 45,663.19 = 8,253.65 : x
  2. Step 2: Convert to fraction form
    30,440.68/45,663.19 = 8,253.65/x
  3. Step 3: Cross multiply
    30,440.68x = 45,663.19 × 8,253.65
  4. Step 4: Simplify right side
    30,440.68x = 376,888,081.67
  5. Step 5: Solve for x
    x = 376,888,081.67/30,440.68
  6. Step 6: Final answer
    x = 12,381.07

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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.