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Finding the Fourth Proportional to 67,679.40, 101,553.68 and 45,205.39

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Solution

The fourth proportional to 67,679.40, 101,553.68 and 45,205.39 is: 67,831.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,679.40 : 101,553.68 = 45,205.39 : x
  2. Step 2: Convert to fraction form
    67,679.40/101,553.68 = 45,205.39/x
  3. Step 3: Cross multiply
    67,679.40x = 101,553.68 × 45,205.39
  4. Step 4: Simplify right side
    67,679.40x = 4,590,773,710.34
  5. Step 5: Solve for x
    x = 4,590,773,710.34/67,679.40
  6. Step 6: Final answer
    x = 67,831.18

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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.