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Finding the Fourth Proportional to 43,394.76, 65,063.52 and 28,558.80

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Solution

The fourth proportional to 43,394.76, 65,063.52 and 28,558.80 is: 42,819.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,394.76 : 65,063.52 = 28,558.80 : x
  2. Step 2: Convert to fraction form
    43,394.76/65,063.52 = 28,558.80/x
  3. Step 3: Cross multiply
    43,394.76x = 65,063.52 × 28,558.80
  4. Step 4: Simplify right side
    43,394.76x = 1,858,136,054.98
  5. Step 5: Solve for x
    x = 1,858,136,054.98/43,394.76
  6. Step 6: Final answer
    x = 42,819.36

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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.