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Finding the Fourth Proportional to 43,709, 65,563.74 and 10,877

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Solution

The fourth proportional to 43,709, 65,563.74 and 10,877 is: 16,315.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,709 : 65,563.74 = 10,877 : x
  2. Step 2: Convert to fraction form
    43,709/65,563.74 = 10,877/x
  3. Step 3: Cross multiply
    43,709x = 65,563.74 × 10,877
  4. Step 4: Simplify right side
    43,709x = 713,136,799.98
  5. Step 5: Solve for x
    x = 713,136,799.98/43,709
  6. Step 6: Final answer
    x = 16,315.56

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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.