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Finding the Fourth Proportional to 72,582.99, 108,832.09 and 28,157.82

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Solution

The fourth proportional to 72,582.99, 108,832.09 and 28,157.82 is: 42,220.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,582.99 : 108,832.09 = 28,157.82 : x
  2. Step 2: Convert to fraction form
    72,582.99/108,832.09 = 28,157.82/x
  3. Step 3: Cross multiply
    72,582.99x = 108,832.09 × 28,157.82
  4. Step 4: Simplify right side
    72,582.99x = 3,064,474,400.44
  5. Step 5: Solve for x
    x = 3,064,474,400.44/72,582.99
  6. Step 6: Final answer
    x = 42,220.28

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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.