Home / 68,435.08-102,654.78-21,688.36

Finding the Fourth Proportional to 68,435.08, 102,654.78 and 21,688.36

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Solution

The fourth proportional to 68,435.08, 102,654.78 and 21,688.36 is: 32,533.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,435.08 : 102,654.78 = 21,688.36 : x
  2. Step 2: Convert to fraction form
    68,435.08/102,654.78 = 21,688.36/x
  3. Step 3: Cross multiply
    68,435.08x = 102,654.78 × 21,688.36
  4. Step 4: Simplify right side
    68,435.08x = 2,226,413,824.36
  5. Step 5: Solve for x
    x = 2,226,413,824.36/68,435.08
  6. Step 6: Final answer
    x = 32,533.22

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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.