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Finding the Fourth Proportional to 48,084.80, 72,078.60 and 21,808.40

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Solution

The fourth proportional to 48,084.80, 72,078.60 and 21,808.40 is: 32,690.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,084.80 : 72,078.60 = 21,808.40 : x
  2. Step 2: Convert to fraction form
    48,084.80/72,078.60 = 21,808.40/x
  3. Step 3: Cross multiply
    48,084.80x = 72,078.60 × 21,808.40
  4. Step 4: Simplify right side
    48,084.80x = 1,571,918,940.24
  5. Step 5: Solve for x
    x = 1,571,918,940.24/48,084.80
  6. Step 6: Final answer
    x = 32,690.56

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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.