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Finding the Fourth Proportional to 86,158.60, 118,893.88 and 47,915.94

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Solution

The fourth proportional to 86,158.60, 118,893.88 and 47,915.94 is: 66,121.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,158.60 : 118,893.88 = 47,915.94 : x
  2. Step 2: Convert to fraction form
    86,158.60/118,893.88 = 47,915.94/x
  3. Step 3: Cross multiply
    86,158.60x = 118,893.88 × 47,915.94
  4. Step 4: Simplify right side
    86,158.60x = 5,696,912,020.45
  5. Step 5: Solve for x
    x = 5,696,912,020.45/86,158.60
  6. Step 6: Final answer
    x = 66,121.22

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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.