Home / 55,387.65-76,433.97-31,513.80

Finding the Fourth Proportional to 55,387.65, 76,433.97 and 31,513.80

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Solution

The fourth proportional to 55,387.65, 76,433.97 and 31,513.80 is: 43,488.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,387.65 : 76,433.97 = 31,513.80 : x
  2. Step 2: Convert to fraction form
    55,387.65/76,433.97 = 31,513.80/x
  3. Step 3: Cross multiply
    55,387.65x = 76,433.97 × 31,513.80
  4. Step 4: Simplify right side
    55,387.65x = 2,408,724,843.79
  5. Step 5: Solve for x
    x = 2,408,724,843.79/55,387.65
  6. Step 6: Final answer
    x = 43,488.48

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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.