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Finding the Fourth Proportional to 49,171,820.80, 73,735,612.80 and 18,869,612.80

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Solution

The fourth proportional to 49,171,820.80, 73,735,612.80 and 18,869,612.80 is: 28,295,931.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,171,820.80 : 73,735,612.80 = 18,869,612.80 : x
  2. Step 2: Convert to fraction form
    49,171,820.80/73,735,612.80 = 18,869,612.80/x
  3. Step 3: Cross multiply
    49,171,820.80x = 73,735,612.80 × 18,869,612.80
  4. Step 4: Simplify right side
    49,171,820.80x = 1,391,362,463,106,723.75
  5. Step 5: Solve for x
    x = 1,391,362,463,106,723.75/49,171,820.80
  6. Step 6: Final answer
    x = 28,295,931.30

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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.