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Finding the Fourth Proportional to 40,502.63, 60,763.68 and 12,800.63

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Solution

The fourth proportional to 40,502.63, 60,763.68 and 12,800.63 is: 19,204.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,502.63 : 60,763.68 = 12,800.63 : x
  2. Step 2: Convert to fraction form
    40,502.63/60,763.68 = 12,800.63/x
  3. Step 3: Cross multiply
    40,502.63x = 60,763.68 × 12,800.63
  4. Step 4: Simplify right side
    40,502.63x = 777,813,081.30
  5. Step 5: Solve for x
    x = 777,813,081.30/40,502.63
  6. Step 6: Final answer
    x = 19,204.02

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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.