Home / 43,255.10-64,919.08-16,978.28

Finding the Fourth Proportional to 43,255.10, 64,919.08 and 16,978.28

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Solution

The fourth proportional to 43,255.10, 64,919.08 and 16,978.28 is: 25,481.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,255.10 : 64,919.08 = 16,978.28 : x
  2. Step 2: Convert to fraction form
    43,255.10/64,919.08 = 16,978.28/x
  3. Step 3: Cross multiply
    43,255.10x = 64,919.08 × 16,978.28
  4. Step 4: Simplify right side
    43,255.10x = 1,102,214,317.58
  5. Step 5: Solve for x
    x = 1,102,214,317.58/43,255.10
  6. Step 6: Final answer
    x = 25,481.72

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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.