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Finding the Fourth Proportional to 43,764.80, 65,658.72 and 12,602.56

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Solution

The fourth proportional to 43,764.80, 65,658.72 and 12,602.56 is: 18,907.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,764.80 : 65,658.72 = 12,602.56 : x
  2. Step 2: Convert to fraction form
    43,764.80/65,658.72 = 12,602.56/x
  3. Step 3: Cross multiply
    43,764.80x = 65,658.72 × 12,602.56
  4. Step 4: Simplify right side
    43,764.80x = 827,467,958.32
  5. Step 5: Solve for x
    x = 827,467,958.32/43,764.80
  6. Step 6: Final answer
    x = 18,907.16

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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.