Home / 85,965.44-128,948.99-25,994.39

Finding the Fourth Proportional to 85,965.44, 128,948.99 and 25,994.39

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Solution

The fourth proportional to 85,965.44, 128,948.99 and 25,994.39 is: 38,991.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,965.44 : 128,948.99 = 25,994.39 : x
  2. Step 2: Convert to fraction form
    85,965.44/128,948.99 = 25,994.39/x
  3. Step 3: Cross multiply
    85,965.44x = 128,948.99 × 25,994.39
  4. Step 4: Simplify right side
    85,965.44x = 3,351,949,561.45
  5. Step 5: Solve for x
    x = 3,351,949,561.45/85,965.44
  6. Step 6: Final answer
    x = 38,991.83

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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.