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Finding the Fourth Proportional to 68,505.95, 102,500.54 and 40,441.28

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Solution

The fourth proportional to 68,505.95, 102,500.54 and 40,441.28 is: 60,509.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,505.95 : 102,500.54 = 40,441.28 : x
  2. Step 2: Convert to fraction form
    68,505.95/102,500.54 = 40,441.28/x
  3. Step 3: Cross multiply
    68,505.95x = 102,500.54 × 40,441.28
  4. Step 4: Simplify right side
    68,505.95x = 4,145,252,475.24
  5. Step 5: Solve for x
    x = 4,145,252,475.24/68,505.95
  6. Step 6: Final answer
    x = 60,509.38

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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.