Home / 85,949.14-128,923.75-26,789.58

Finding the Fourth Proportional to 85,949.14, 128,923.75 and 26,789.58

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Solution

The fourth proportional to 85,949.14, 128,923.75 and 26,789.58 is: 40,184.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,949.14 : 128,923.75 = 26,789.58 : x
  2. Step 2: Convert to fraction form
    85,949.14/128,923.75 = 26,789.58/x
  3. Step 3: Cross multiply
    85,949.14x = 128,923.75 × 26,789.58
  4. Step 4: Simplify right side
    85,949.14x = 3,453,813,114.53
  5. Step 5: Solve for x
    x = 3,453,813,114.53/85,949.14
  6. Step 6: Final answer
    x = 40,184.38

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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.