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Finding the Fourth Proportional to 85,626, 118,163.88 and 47,900.25

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Solution

The fourth proportional to 85,626, 118,163.88 and 47,900.25 is: 66,102.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,626 : 118,163.88 = 47,900.25 : x
  2. Step 2: Convert to fraction form
    85,626/118,163.88 = 47,900.25/x
  3. Step 3: Cross multiply
    85,626x = 118,163.88 × 47,900.25
  4. Step 4: Simplify right side
    85,626x = 5,660,079,392.97
  5. Step 5: Solve for x
    x = 5,660,079,392.97/85,626
  6. Step 6: Final answer
    x = 66,102.35

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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.