Home / 86,231.06-129,347.23-30,071.06

Finding the Fourth Proportional to 86,231.06, 129,347.23 and 30,071.06

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Solution

The fourth proportional to 86,231.06, 129,347.23 and 30,071.06 is: 45,106.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,231.06 : 129,347.23 = 30,071.06 : x
  2. Step 2: Convert to fraction form
    86,231.06/129,347.23 = 30,071.06/x
  3. Step 3: Cross multiply
    86,231.06x = 129,347.23 × 30,071.06
  4. Step 4: Simplify right side
    86,231.06x = 3,889,608,314.16
  5. Step 5: Solve for x
    x = 3,889,608,314.16/86,231.06
  6. Step 6: Final answer
    x = 45,106.81

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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.