Home / 68,543.37-102,815.05-38,559.60

Finding the Fourth Proportional to 68,543.37, 102,815.05 and 38,559.60

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Solution

The fourth proportional to 68,543.37, 102,815.05 and 38,559.60 is: 57,839.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,543.37 : 102,815.05 = 38,559.60 : x
  2. Step 2: Convert to fraction form
    68,543.37/102,815.05 = 38,559.60/x
  3. Step 3: Cross multiply
    68,543.37x = 102,815.05 × 38,559.60
  4. Step 4: Simplify right side
    68,543.37x = 3,964,507,201.98
  5. Step 5: Solve for x
    x = 3,964,507,201.98/68,543.37
  6. Step 6: Final answer
    x = 57,839.40

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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.