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Finding the Fourth Proportional to 43,664.86, 65,497.11 and 12,500.11

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Solution

The fourth proportional to 43,664.86, 65,497.11 and 12,500.11 is: 18,750.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,664.86 : 65,497.11 = 12,500.11 : x
  2. Step 2: Convert to fraction form
    43,664.86/65,497.11 = 12,500.11/x
  3. Step 3: Cross multiply
    43,664.86x = 65,497.11 × 12,500.11
  4. Step 4: Simplify right side
    43,664.86x = 818,721,079.68
  5. Step 5: Solve for x
    x = 818,721,079.68/43,664.86
  6. Step 6: Final answer
    x = 18,750.11

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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.