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Finding the Fourth Proportional to 40,300.71, 60,446.71 and 10,721.54

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Solution

The fourth proportional to 40,300.71, 60,446.71 and 10,721.54 is: 16,081.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,300.71 : 60,446.71 = 10,721.54 : x
  2. Step 2: Convert to fraction form
    40,300.71/60,446.71 = 10,721.54/x
  3. Step 3: Cross multiply
    40,300.71x = 60,446.71 × 10,721.54
  4. Step 4: Simplify right side
    40,300.71x = 648,081,753.34
  5. Step 5: Solve for x
    x = 648,081,753.34/40,300.71
  6. Step 6: Final answer
    x = 16,081.15

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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.