Home / 66,667.75-91,982.93-39,800.45

Finding the Fourth Proportional to 66,667.75, 91,982.93 and 39,800.45

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Solution

The fourth proportional to 66,667.75, 91,982.93 and 39,800.45 is: 54,913.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,667.75 : 91,982.93 = 39,800.45 : x
  2. Step 2: Convert to fraction form
    66,667.75/91,982.93 = 39,800.45/x
  3. Step 3: Cross multiply
    66,667.75x = 91,982.93 × 39,800.45
  4. Step 4: Simplify right side
    66,667.75x = 3,660,962,037.27
  5. Step 5: Solve for x
    x = 3,660,962,037.27/66,667.75
  6. Step 6: Final answer
    x = 54,913.54

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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.