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Finding the Fourth Proportional to 40,405.63, 60,617.99 and 12,703.63

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Solution

The fourth proportional to 40,405.63, 60,617.99 and 12,703.63 is: 19,058.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,405.63 : 60,617.99 = 12,703.63 : x
  2. Step 2: Convert to fraction form
    40,405.63/60,617.99 = 12,703.63/x
  3. Step 3: Cross multiply
    40,405.63x = 60,617.99 × 12,703.63
  4. Step 4: Simplify right side
    40,405.63x = 770,068,516.30
  5. Step 5: Solve for x
    x = 770,068,516.30/40,405.63
  6. Step 6: Final answer
    x = 19,058.45

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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.