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Finding the Fourth Proportional to 52,777.08, 72,832.50 and 28,905.30

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Solution

The fourth proportional to 52,777.08, 72,832.50 and 28,905.30 is: 39,889.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,777.08 : 72,832.50 = 28,905.30 : x
  2. Step 2: Convert to fraction form
    52,777.08/72,832.50 = 28,905.30/x
  3. Step 3: Cross multiply
    52,777.08x = 72,832.50 × 28,905.30
  4. Step 4: Simplify right side
    52,777.08x = 2,105,245,262.25
  5. Step 5: Solve for x
    x = 2,105,245,262.25/52,777.08
  6. Step 6: Final answer
    x = 39,889.38

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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.