Home / 86,243.09-129,345.20-23,918.45

Finding the Fourth Proportional to 86,243.09, 129,345.20 and 23,918.45

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Solution

The fourth proportional to 86,243.09, 129,345.20 and 23,918.45 is: 35,872.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,243.09 : 129,345.20 = 23,918.45 : x
  2. Step 2: Convert to fraction form
    86,243.09/129,345.20 = 23,918.45/x
  3. Step 3: Cross multiply
    86,243.09x = 129,345.20 × 23,918.45
  4. Step 4: Simplify right side
    86,243.09x = 3,093,736,579.35
  5. Step 5: Solve for x
    x = 3,093,736,579.35/86,243.09
  6. Step 6: Final answer
    x = 35,872.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.