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Finding the Fourth Proportional to 82,447,751.70, 123,662,770.20 and 21,863,477.70

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Solution

The fourth proportional to 82,447,751.70, 123,662,770.20 and 21,863,477.70 is: 32,792,867.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,447,751.70 : 123,662,770.20 = 21,863,477.70 : x
  2. Step 2: Convert to fraction form
    82,447,751.70/123,662,770.20 = 21,863,477.70/x
  3. Step 3: Cross multiply
    82,447,751.70x = 123,662,770.20 × 21,863,477.70
  4. Step 4: Simplify right side
    82,447,751.70x = 2,703,698,218,587,924.50
  5. Step 5: Solve for x
    x = 2,703,698,218,587,924.50/82,447,751.70
  6. Step 6: Final answer
    x = 32,792,867.76

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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.