Home / 86,005.81-118,705.49-49,708.80

Finding the Fourth Proportional to 86,005.81, 118,705.49 and 49,708.80

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Solution

The fourth proportional to 86,005.81, 118,705.49 and 49,708.80 is: 68,608.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,005.81 : 118,705.49 = 49,708.80 : x
  2. Step 2: Convert to fraction form
    86,005.81/118,705.49 = 49,708.80/x
  3. Step 3: Cross multiply
    86,005.81x = 118,705.49 × 49,708.80
  4. Step 4: Simplify right side
    86,005.81x = 5,900,707,399.18
  5. Step 5: Solve for x
    x = 5,900,707,399.18/86,005.81
  6. Step 6: Final answer
    x = 68,608.24

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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.