Home / 86,331.84-119,116.32-66,209.60

Finding the Fourth Proportional to 86,331.84, 119,116.32 and 66,209.60

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Solution

The fourth proportional to 86,331.84, 119,116.32 and 66,209.60 is: 91,352.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,331.84 : 119,116.32 = 66,209.60 : x
  2. Step 2: Convert to fraction form
    86,331.84/119,116.32 = 66,209.60/x
  3. Step 3: Cross multiply
    86,331.84x = 119,116.32 × 66,209.60
  4. Step 4: Simplify right side
    86,331.84x = 7,886,643,900.67
  5. Step 5: Solve for x
    x = 7,886,643,900.67/86,331.84
  6. Step 6: Final answer
    x = 91,352.67

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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.