Home / 86,420.84-119,258.56-50,128.68

Finding the Fourth Proportional to 86,420.84, 119,258.56 and 50,128.68

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Solution

The fourth proportional to 86,420.84, 119,258.56 and 50,128.68 is: 69,176.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,420.84 : 119,258.56 = 50,128.68 : x
  2. Step 2: Convert to fraction form
    86,420.84/119,258.56 = 50,128.68/x
  3. Step 3: Cross multiply
    86,420.84x = 119,258.56 × 50,128.68
  4. Step 4: Simplify right side
    86,420.84x = 5,978,274,191.50
  5. Step 5: Solve for x
    x = 5,978,274,191.50/86,420.84
  6. Step 6: Final answer
    x = 69,176.30

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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.