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Finding the Fourth Proportional to 43,185.60, 64,780 and 15,100.16

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Solution

The fourth proportional to 43,185.60, 64,780 and 15,100.16 is: 22,650.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,185.60 : 64,780 = 15,100.16 : x
  2. Step 2: Convert to fraction form
    43,185.60/64,780 = 15,100.16/x
  3. Step 3: Cross multiply
    43,185.60x = 64,780 × 15,100.16
  4. Step 4: Simplify right side
    43,185.60x = 978,188,364.80
  5. Step 5: Solve for x
    x = 978,188,364.80/43,185.60
  6. Step 6: Final answer
    x = 22,650.80

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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.