Home / 85,626.06-128,439.09-46,431.38

Finding the Fourth Proportional to 85,626.06, 128,439.09 and 46,431.38

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Solution

The fourth proportional to 85,626.06, 128,439.09 and 46,431.38 is: 69,647.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,626.06 : 128,439.09 = 46,431.38 : x
  2. Step 2: Convert to fraction form
    85,626.06/128,439.09 = 46,431.38/x
  3. Step 3: Cross multiply
    85,626.06x = 128,439.09 × 46,431.38
  4. Step 4: Simplify right side
    85,626.06x = 5,963,603,552.45
  5. Step 5: Solve for x
    x = 5,963,603,552.45/85,626.06
  6. Step 6: Final answer
    x = 69,647.06

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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.