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Finding the Fourth Proportional to 86,170.88, 118,915.81 and 50,390.95

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Solution

The fourth proportional to 86,170.88, 118,915.81 and 50,390.95 is: 69,539.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,170.88 : 118,915.81 = 50,390.95 : x
  2. Step 2: Convert to fraction form
    86,170.88/118,915.81 = 50,390.95/x
  3. Step 3: Cross multiply
    86,170.88x = 118,915.81 × 50,390.95
  4. Step 4: Simplify right side
    86,170.88x = 5,992,280,635.92
  5. Step 5: Solve for x
    x = 5,992,280,635.92/86,170.88
  6. Step 6: Final answer
    x = 69,539.51

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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.