Home / 85,736.78-118,305.54-49,439.57

Finding the Fourth Proportional to 85,736.78, 118,305.54 and 49,439.57

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Solution

The fourth proportional to 85,736.78, 118,305.54 and 49,439.57 is: 68,220.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,736.78 : 118,305.54 = 49,439.57 : x
  2. Step 2: Convert to fraction form
    85,736.78/118,305.54 = 49,439.57/x
  3. Step 3: Cross multiply
    85,736.78x = 118,305.54 × 49,439.57
  4. Step 4: Simplify right side
    85,736.78x = 5,848,974,295.64
  5. Step 5: Solve for x
    x = 5,848,974,295.64/85,736.78
  6. Step 6: Final answer
    x = 68,220.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.