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Finding the Fourth Proportional to 86,162.70, 118,902.96 and 47,922.06

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Solution

The fourth proportional to 86,162.70, 118,902.96 and 47,922.06 is: 66,131.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,162.70 : 118,902.96 = 47,922.06 : x
  2. Step 2: Convert to fraction form
    86,162.70/118,902.96 = 47,922.06/x
  3. Step 3: Cross multiply
    86,162.70x = 118,902.96 × 47,922.06
  4. Step 4: Simplify right side
    86,162.70x = 5,698,074,783.30
  5. Step 5: Solve for x
    x = 5,698,074,783.30/86,162.70
  6. Step 6: Final answer
    x = 66,131.57

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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.