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Finding the Fourth Proportional to 103,679.68, 155,496.96 and 40,479.46

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Solution

The fourth proportional to 103,679.68, 155,496.96 and 40,479.46 is: 60,710.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,679.68 : 155,496.96 = 40,479.46 : x
  2. Step 2: Convert to fraction form
    103,679.68/155,496.96 = 40,479.46/x
  3. Step 3: Cross multiply
    103,679.68x = 155,496.96 × 40,479.46
  4. Step 4: Simplify right side
    103,679.68x = 6,294,432,972.44
  5. Step 5: Solve for x
    x = 6,294,432,972.44/103,679.68
  6. Step 6: Final answer
    x = 60,710.38

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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.