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Finding the Fourth Proportional to 43,259.20, 64,840.80 and 16,955.20

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Solution

The fourth proportional to 43,259.20, 64,840.80 and 16,955.20 is: 25,413.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,259.20 : 64,840.80 = 16,955.20 : x
  2. Step 2: Convert to fraction form
    43,259.20/64,840.80 = 16,955.20/x
  3. Step 3: Cross multiply
    43,259.20x = 64,840.80 × 16,955.20
  4. Step 4: Simplify right side
    43,259.20x = 1,099,388,732.16
  5. Step 5: Solve for x
    x = 1,099,388,732.16/43,259.20
  6. Step 6: Final answer
    x = 25,413.99

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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.