Home / 81,158.73-111,999.60-45,350.25

Finding the Fourth Proportional to 81,158.73, 111,999.60 and 45,350.25

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Solution

The fourth proportional to 81,158.73, 111,999.60 and 45,350.25 is: 62,583.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,158.73 : 111,999.60 = 45,350.25 : x
  2. Step 2: Convert to fraction form
    81,158.73/111,999.60 = 45,350.25/x
  3. Step 3: Cross multiply
    81,158.73x = 111,999.60 × 45,350.25
  4. Step 4: Simplify right side
    81,158.73x = 5,079,209,859.90
  5. Step 5: Solve for x
    x = 5,079,209,859.90/81,158.73
  6. Step 6: Final answer
    x = 62,583.65

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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.