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Finding the Fourth Proportional to 50,318, 75,479.57 and 12,878.39

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Solution

The fourth proportional to 50,318, 75,479.57 and 12,878.39 is: 19,318.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,318 : 75,479.57 = 12,878.39 : x
  2. Step 2: Convert to fraction form
    50,318/75,479.57 = 12,878.39/x
  3. Step 3: Cross multiply
    50,318x = 75,479.57 × 12,878.39
  4. Step 4: Simplify right side
    50,318x = 972,054,897.70
  5. Step 5: Solve for x
    x = 972,054,897.70/50,318
  6. Step 6: Final answer
    x = 19,318.23

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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.