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Finding the Fourth Proportional to 45,810.56, 68,717.92 and 12,529.89

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Solution

The fourth proportional to 45,810.56, 68,717.92 and 12,529.89 is: 18,795.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,810.56 : 68,717.92 = 12,529.89 : x
  2. Step 2: Convert to fraction form
    45,810.56/68,717.92 = 12,529.89/x
  3. Step 3: Cross multiply
    45,810.56x = 68,717.92 × 12,529.89
  4. Step 4: Simplify right side
    45,810.56x = 861,027,978.63
  5. Step 5: Solve for x
    x = 861,027,978.63/45,810.56
  6. Step 6: Final answer
    x = 18,795.40

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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.