Home / 85,949.19-128,923.39-26,784.90

Finding the Fourth Proportional to 85,949.19, 128,923.39 and 26,784.90

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Solution

The fourth proportional to 85,949.19, 128,923.39 and 26,784.90 is: 40,177.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,949.19 : 128,923.39 = 26,784.90 : x
  2. Step 2: Convert to fraction form
    85,949.19/128,923.39 = 26,784.90/x
  3. Step 3: Cross multiply
    85,949.19x = 128,923.39 × 26,784.90
  4. Step 4: Simplify right side
    85,949.19x = 3,453,200,108.81
  5. Step 5: Solve for x
    x = 3,453,200,108.81/85,949.19
  6. Step 6: Final answer
    x = 40,177.23

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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.