Home / 81,014.77-111,805.78-45,205.55

Finding the Fourth Proportional to 81,014.77, 111,805.78 and 45,205.55

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Solution

The fourth proportional to 81,014.77, 111,805.78 and 45,205.55 is: 62,386.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,014.77 : 111,805.78 = 45,205.55 : x
  2. Step 2: Convert to fraction form
    81,014.77/111,805.78 = 45,205.55/x
  3. Step 3: Cross multiply
    81,014.77x = 111,805.78 × 45,205.55
  4. Step 4: Simplify right side
    81,014.77x = 5,054,241,778.08
  5. Step 5: Solve for x
    x = 5,054,241,778.08/81,014.77
  6. Step 6: Final answer
    x = 62,386.67

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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.