Home / 86,021.20-128,932.76-33,386.16

Finding the Fourth Proportional to 86,021.20, 128,932.76 and 33,386.16

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Solution

The fourth proportional to 86,021.20, 128,932.76 and 33,386.16 is: 50,040.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,021.20 : 128,932.76 = 33,386.16 : x
  2. Step 2: Convert to fraction form
    86,021.20/128,932.76 = 33,386.16/x
  3. Step 3: Cross multiply
    86,021.20x = 128,932.76 × 33,386.16
  4. Step 4: Simplify right side
    86,021.20x = 4,304,569,754.60
  5. Step 5: Solve for x
    x = 4,304,569,754.60/86,021.20
  6. Step 6: Final answer
    x = 50,040.80

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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.