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Finding the Fourth Proportional to 81,662,482.80, 122,493,724.20 and 36,224,277.30

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Solution

The fourth proportional to 81,662,482.80, 122,493,724.20 and 36,224,277.30 is: 54,336,415.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,662,482.80 : 122,493,724.20 = 36,224,277.30 : x
  2. Step 2: Convert to fraction form
    81,662,482.80/122,493,724.20 = 36,224,277.30/x
  3. Step 3: Cross multiply
    81,662,482.80x = 122,493,724.20 × 36,224,277.30
  4. Step 4: Simplify right side
    81,662,482.80x = 4,437,246,632,930,520.50
  5. Step 5: Solve for x
    x = 4,437,246,632,930,520.50/81,662,482.80
  6. Step 6: Final answer
    x = 54,336,415.95

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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.