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Finding the Fourth Proportional to 85,919.54, 128,888.01 and 29,759.54

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Solution

The fourth proportional to 85,919.54, 128,888.01 and 29,759.54 is: 44,642.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,919.54 : 128,888.01 = 29,759.54 : x
  2. Step 2: Convert to fraction form
    85,919.54/128,888.01 = 29,759.54/x
  3. Step 3: Cross multiply
    85,919.54x = 128,888.01 × 29,759.54
  4. Step 4: Simplify right side
    85,919.54x = 3,835,647,244.68
  5. Step 5: Solve for x
    x = 3,835,647,244.68/85,919.54
  6. Step 6: Final answer
    x = 44,642.32

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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.