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Finding the Fourth Proportional to 72,563.96, 100,136.58 and 40,732.04

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Solution

The fourth proportional to 72,563.96, 100,136.58 and 40,732.04 is: 56,209.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,563.96 : 100,136.58 = 40,732.04 : x
  2. Step 2: Convert to fraction form
    72,563.96/100,136.58 = 40,732.04/x
  3. Step 3: Cross multiply
    72,563.96x = 100,136.58 × 40,732.04
  4. Step 4: Simplify right side
    72,563.96x = 4,078,767,182.02
  5. Step 5: Solve for x
    x = 4,078,767,182.02/72,563.96
  6. Step 6: Final answer
    x = 56,209.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.