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Finding the Fourth Proportional to 43,152.78, 64,736.14 and 12,760.99

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Solution

The fourth proportional to 43,152.78, 64,736.14 and 12,760.99 is: 19,143.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,152.78 : 64,736.14 = 12,760.99 : x
  2. Step 2: Convert to fraction form
    43,152.78/64,736.14 = 12,760.99/x
  3. Step 3: Cross multiply
    43,152.78x = 64,736.14 × 12,760.99
  4. Step 4: Simplify right side
    43,152.78x = 826,097,235.18
  5. Step 5: Solve for x
    x = 826,097,235.18/43,152.78
  6. Step 6: Final answer
    x = 19,143.55

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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.