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Finding the Fourth Proportional to 43,442.70, 65,054.70 and 28,571.10

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Solution

The fourth proportional to 43,442.70, 65,054.70 and 28,571.10 is: 42,784.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,442.70 : 65,054.70 = 28,571.10 : x
  2. Step 2: Convert to fraction form
    43,442.70/65,054.70 = 28,571.10/x
  3. Step 3: Cross multiply
    43,442.70x = 65,054.70 × 28,571.10
  4. Step 4: Simplify right side
    43,442.70x = 1,858,684,339.17
  5. Step 5: Solve for x
    x = 1,858,684,339.17/43,442.70
  6. Step 6: Final answer
    x = 42,784.73

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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.