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Finding the Fourth Proportional to 43,871.94, 65,807.91 and 12,707.19

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Solution

The fourth proportional to 43,871.94, 65,807.91 and 12,707.19 is: 19,060.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,871.94 : 65,807.91 = 12,707.19 : x
  2. Step 2: Convert to fraction form
    43,871.94/65,807.91 = 12,707.19/x
  3. Step 3: Cross multiply
    43,871.94x = 65,807.91 × 12,707.19
  4. Step 4: Simplify right side
    43,871.94x = 836,233,615.87
  5. Step 5: Solve for x
    x = 836,233,615.87/43,871.94
  6. Step 6: Final answer
    x = 19,060.79

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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.