Home / 55,137-76,089.42-29,986.68

Finding the Fourth Proportional to 55,137, 76,089.42 and 29,986.68

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Solution

The fourth proportional to 55,137, 76,089.42 and 29,986.68 is: 41,381.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,137 : 76,089.42 = 29,986.68 : x
  2. Step 2: Convert to fraction form
    55,137/76,089.42 = 29,986.68/x
  3. Step 3: Cross multiply
    55,137x = 76,089.42 × 29,986.68
  4. Step 4: Simplify right side
    55,137x = 2,281,669,088.93
  5. Step 5: Solve for x
    x = 2,281,669,088.93/55,137
  6. Step 6: Final answer
    x = 41,381.81

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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.