Home / 45,412.86-68,129.67-13,827.42

Finding the Fourth Proportional to 45,412.86, 68,129.67 and 13,827.42

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Solution

The fourth proportional to 45,412.86, 68,129.67 and 13,827.42 is: 20,744.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,412.86 : 68,129.67 = 13,827.42 : x
  2. Step 2: Convert to fraction form
    45,412.86/68,129.67 = 13,827.42/x
  3. Step 3: Cross multiply
    45,412.86x = 68,129.67 × 13,827.42
  4. Step 4: Simplify right side
    45,412.86x = 942,057,561.55
  5. Step 5: Solve for x
    x = 942,057,561.55/45,412.86
  6. Step 6: Final answer
    x = 20,744.29

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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.