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Finding the Fourth Proportional to 68,996,501.10, 103,494,751.65 and 20,481,842.70

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Solution

The fourth proportional to 68,996,501.10, 103,494,751.65 and 20,481,842.70 is: 30,722,764.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,996,501.10 : 103,494,751.65 = 20,481,842.70 : x
  2. Step 2: Convert to fraction form
    68,996,501.10/103,494,751.65 = 20,481,842.70/x
  3. Step 3: Cross multiply
    68,996,501.10x = 103,494,751.65 × 20,481,842.70
  4. Step 4: Simplify right side
    68,996,501.10x = 2,119,763,223,570,865.50
  5. Step 5: Solve for x
    x = 2,119,763,223,570,865.50/68,996,501.10
  6. Step 6: Final answer
    x = 30,722,764.05

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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.