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Finding the Fourth Proportional to 40,390.67, 60,581.36 and 10,810.81

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Solution

The fourth proportional to 40,390.67, 60,581.36 and 10,810.81 is: 16,214.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,390.67 : 60,581.36 = 10,810.81 : x
  2. Step 2: Convert to fraction form
    40,390.67/60,581.36 = 10,810.81/x
  3. Step 3: Cross multiply
    40,390.67x = 60,581.36 × 10,810.81
  4. Step 4: Simplify right side
    40,390.67x = 654,933,572.50
  5. Step 5: Solve for x
    x = 654,933,572.50/40,390.67
  6. Step 6: Final answer
    x = 16,214.97

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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.