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Finding the Fourth Proportional to 40,409.52, 60,623.81 and 12,707.52

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Solution

The fourth proportional to 40,409.52, 60,623.81 and 12,707.52 is: 19,064.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,409.52 : 60,623.81 = 12,707.52 : x
  2. Step 2: Convert to fraction form
    40,409.52/60,623.81 = 12,707.52/x
  3. Step 3: Cross multiply
    40,409.52x = 60,623.81 × 12,707.52
  4. Step 4: Simplify right side
    40,409.52x = 770,378,214.51
  5. Step 5: Solve for x
    x = 770,378,214.51/40,409.52
  6. Step 6: Final answer
    x = 19,064.28

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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.