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Finding the Fourth Proportional to 86,170.50, 118,908 and 48,442.32

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Solution

The fourth proportional to 86,170.50, 118,908 and 48,442.32 is: 66,846.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,170.50 : 118,908 = 48,442.32 : x
  2. Step 2: Convert to fraction form
    86,170.50/118,908 = 48,442.32/x
  3. Step 3: Cross multiply
    86,170.50x = 118,908 × 48,442.32
  4. Step 4: Simplify right side
    86,170.50x = 5,760,179,386.56
  5. Step 5: Solve for x
    x = 5,760,179,386.56/86,170.50
  6. Step 6: Final answer
    x = 66,846.30

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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.