Home / 86,183.12-118,931.27-47,942.21

Finding the Fourth Proportional to 86,183.12, 118,931.27 and 47,942.21

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Solution

The fourth proportional to 86,183.12, 118,931.27 and 47,942.21 is: 66,159.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,183.12 : 118,931.27 = 47,942.21 : x
  2. Step 2: Convert to fraction form
    86,183.12/118,931.27 = 47,942.21/x
  3. Step 3: Cross multiply
    86,183.12x = 118,931.27 × 47,942.21
  4. Step 4: Simplify right side
    86,183.12x = 5,701,827,087.54
  5. Step 5: Solve for x
    x = 5,701,827,087.54/86,183.12
  6. Step 6: Final answer
    x = 66,159.45

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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.