Home / 68,839.01-103,259.66-18,918.80

Finding the Fourth Proportional to 68,839.01, 103,259.66 and 18,918.80

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Solution

The fourth proportional to 68,839.01, 103,259.66 and 18,918.80 is: 28,378.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,839.01 : 103,259.66 = 18,918.80 : x
  2. Step 2: Convert to fraction form
    68,839.01/103,259.66 = 18,918.80/x
  3. Step 3: Cross multiply
    68,839.01x = 103,259.66 × 18,918.80
  4. Step 4: Simplify right side
    68,839.01x = 1,953,549,173.98
  5. Step 5: Solve for x
    x = 1,953,549,173.98/68,839.01
  6. Step 6: Final answer
    x = 28,378.52

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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.