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Finding the Fourth Proportional to 43,553.92, 65,315.52 and 18,916.48

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Solution

The fourth proportional to 43,553.92, 65,315.52 and 18,916.48 is: 28,368.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,553.92 : 65,315.52 = 18,916.48 : x
  2. Step 2: Convert to fraction form
    43,553.92/65,315.52 = 18,916.48/x
  3. Step 3: Cross multiply
    43,553.92x = 65,315.52 × 18,916.48
  4. Step 4: Simplify right side
    43,553.92x = 1,235,539,727.77
  5. Step 5: Solve for x
    x = 1,235,539,727.77/43,553.92
  6. Step 6: Final answer
    x = 28,368.05

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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.