Home / 86,390.26-119,221-50,581.78

Finding the Fourth Proportional to 86,390.26, 119,221 and 50,581.78

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Solution

The fourth proportional to 86,390.26, 119,221 and 50,581.78 is: 69,804.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,390.26 : 119,221 = 50,581.78 : x
  2. Step 2: Convert to fraction form
    86,390.26/119,221 = 50,581.78/x
  3. Step 3: Cross multiply
    86,390.26x = 119,221 × 50,581.78
  4. Step 4: Simplify right side
    86,390.26x = 6,030,410,393.38
  5. Step 5: Solve for x
    x = 6,030,410,393.38/86,390.26
  6. Step 6: Final answer
    x = 69,804.29

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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.