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Finding the Fourth Proportional to 53,871.86, 80,813.02 and 18,358.22

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Solution

The fourth proportional to 53,871.86, 80,813.02 and 18,358.22 is: 27,539.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,871.86 : 80,813.02 = 18,358.22 : x
  2. Step 2: Convert to fraction form
    53,871.86/80,813.02 = 18,358.22/x
  3. Step 3: Cross multiply
    53,871.86x = 80,813.02 × 18,358.22
  4. Step 4: Simplify right side
    53,871.86x = 1,483,583,200.02
  5. Step 5: Solve for x
    x = 1,483,583,200.02/53,871.86
  6. Step 6: Final answer
    x = 27,539.11

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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.