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Finding the Fourth Proportional to 50,976, 70,346.88 and 28,620

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Solution

The fourth proportional to 50,976, 70,346.88 and 28,620 is: 39,495.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,976 : 70,346.88 = 28,620 : x
  2. Step 2: Convert to fraction form
    50,976/70,346.88 = 28,620/x
  3. Step 3: Cross multiply
    50,976x = 70,346.88 × 28,620
  4. Step 4: Simplify right side
    50,976x = 2,013,327,705.60
  5. Step 5: Solve for x
    x = 2,013,327,705.60/50,976
  6. Step 6: Final answer
    x = 39,495.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.