Home / 68,420.52-102,633.66-21,672.36

Finding the Fourth Proportional to 68,420.52, 102,633.66 and 21,672.36

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Solution

The fourth proportional to 68,420.52, 102,633.66 and 21,672.36 is: 32,509.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,420.52 : 102,633.66 = 21,672.36 : x
  2. Step 2: Convert to fraction form
    68,420.52/102,633.66 = 21,672.36/x
  3. Step 3: Cross multiply
    68,420.52x = 102,633.66 × 21,672.36
  4. Step 4: Simplify right side
    68,420.52x = 2,224,313,627.64
  5. Step 5: Solve for x
    x = 2,224,313,627.64/68,420.52
  6. Step 6: Final answer
    x = 32,509.45

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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.