Home / 86,324.79-129,518.28-30,173.16

Finding the Fourth Proportional to 86,324.79, 129,518.28 and 30,173.16

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Solution

The fourth proportional to 86,324.79, 129,518.28 and 30,173.16 is: 45,270.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,324.79 : 129,518.28 = 30,173.16 : x
  2. Step 2: Convert to fraction form
    86,324.79/129,518.28 = 30,173.16/x
  3. Step 3: Cross multiply
    86,324.79x = 129,518.28 × 30,173.16
  4. Step 4: Simplify right side
    86,324.79x = 3,907,975,785.36
  5. Step 5: Solve for x
    x = 3,907,975,785.36/86,324.79
  6. Step 6: Final answer
    x = 45,270.61

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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.