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Finding the Fourth Proportional to 68,101.47, 102,168.59 and 21,354.34

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Solution

The fourth proportional to 68,101.47, 102,168.59 and 21,354.34 is: 32,036.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,101.47 : 102,168.59 = 21,354.34 : x
  2. Step 2: Convert to fraction form
    68,101.47/102,168.59 = 21,354.34/x
  3. Step 3: Cross multiply
    68,101.47x = 102,168.59 × 21,354.34
  4. Step 4: Simplify right side
    68,101.47x = 2,181,742,808.18
  5. Step 5: Solve for x
    x = 2,181,742,808.18/68,101.47
  6. Step 6: Final answer
    x = 32,036.65

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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.