Home / 51,781.18-71,457.34-29,120.16

Finding the Fourth Proportional to 51,781.18, 71,457.34 and 29,120.16

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Solution

The fourth proportional to 51,781.18, 71,457.34 and 29,120.16 is: 40,185.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,781.18 : 71,457.34 = 29,120.16 : x
  2. Step 2: Convert to fraction form
    51,781.18/71,457.34 = 29,120.16/x
  3. Step 3: Cross multiply
    51,781.18x = 71,457.34 × 29,120.16
  4. Step 4: Simplify right side
    51,781.18x = 2,080,848,816.69
  5. Step 5: Solve for x
    x = 2,080,848,816.69/51,781.18
  6. Step 6: Final answer
    x = 40,185.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.