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Finding the Fourth Proportional to 85,410,706.80, 128,103,618.60 and 24,820,114.80

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Solution

The fourth proportional to 85,410,706.80, 128,103,618.60 and 24,820,114.80 is: 37,226,556.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,410,706.80 : 128,103,618.60 = 24,820,114.80 : x
  2. Step 2: Convert to fraction form
    85,410,706.80/128,103,618.60 = 24,820,114.80/x
  3. Step 3: Cross multiply
    85,410,706.80x = 128,103,618.60 × 24,820,114.80
  4. Step 4: Simplify right side
    85,410,706.80x = 3,179,546,519,947,415
  5. Step 5: Solve for x
    x = 3,179,546,519,947,415/85,410,706.80
  6. Step 6: Final answer
    x = 37,226,556.71

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1.5x scale

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.