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Finding the Fourth Proportional to 85,618, 118,152.84 and 47,893.06

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Solution

The fourth proportional to 85,618, 118,152.84 and 47,893.06 is: 66,092.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,618 : 118,152.84 = 47,893.06 : x
  2. Step 2: Convert to fraction form
    85,618/118,152.84 = 47,893.06/x
  3. Step 3: Cross multiply
    85,618x = 118,152.84 × 47,893.06
  4. Step 4: Simplify right side
    85,618x = 5,658,701,055.29
  5. Step 5: Solve for x
    x = 5,658,701,055.29/85,618
  6. Step 6: Final answer
    x = 66,092.42

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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.