Home / 68,121.10-102,145.20-28,633.60

Finding the Fourth Proportional to 68,121.10, 102,145.20 and 28,633.60

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Solution

The fourth proportional to 68,121.10, 102,145.20 and 28,633.60 is: 42,935.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,121.10 : 102,145.20 = 28,633.60 : x
  2. Step 2: Convert to fraction form
    68,121.10/102,145.20 = 28,633.60/x
  3. Step 3: Cross multiply
    68,121.10x = 102,145.20 × 28,633.60
  4. Step 4: Simplify right side
    68,121.10x = 2,924,784,798.72
  5. Step 5: Solve for x
    x = 2,924,784,798.72/68,121.10
  6. Step 6: Final answer
    x = 42,935.08

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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.