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Finding the Fourth Proportional to 55,679.88, 83,519.82 and 13,559.70

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Solution

The fourth proportional to 55,679.88, 83,519.82 and 13,559.70 is: 20,339.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,679.88 : 83,519.82 = 13,559.70 : x
  2. Step 2: Convert to fraction form
    55,679.88/83,519.82 = 13,559.70/x
  3. Step 3: Cross multiply
    55,679.88x = 83,519.82 × 13,559.70
  4. Step 4: Simplify right side
    55,679.88x = 1,132,503,703.25
  5. Step 5: Solve for x
    x = 1,132,503,703.25/55,679.88
  6. Step 6: Final answer
    x = 20,339.55

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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.