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Finding the Fourth Proportional to 86,181.62, 118,929.20 and 47,940.71

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Solution

The fourth proportional to 86,181.62, 118,929.20 and 47,940.71 is: 66,157.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,181.62 : 118,929.20 = 47,940.71 : x
  2. Step 2: Convert to fraction form
    86,181.62/118,929.20 = 47,940.71/x
  3. Step 3: Cross multiply
    86,181.62x = 118,929.20 × 47,940.71
  4. Step 4: Simplify right side
    86,181.62x = 5,701,549,453.38
  5. Step 5: Solve for x
    x = 5,701,549,453.38/86,181.62
  6. Step 6: Final answer
    x = 66,157.38

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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.