Home / 68,729.96-103,094.88-18,810.50

Finding the Fourth Proportional to 68,729.96, 103,094.88 and 18,810.50

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Solution

The fourth proportional to 68,729.96, 103,094.88 and 18,810.50 is: 28,215.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,729.96 : 103,094.88 = 18,810.50 : x
  2. Step 2: Convert to fraction form
    68,729.96/103,094.88 = 18,810.50/x
  3. Step 3: Cross multiply
    68,729.96x = 103,094.88 × 18,810.50
  4. Step 4: Simplify right side
    68,729.96x = 1,939,266,240.24
  5. Step 5: Solve for x
    x = 1,939,266,240.24/68,729.96
  6. Step 6: Final answer
    x = 28,215.73

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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.