Home / 81,011.57-111,796.37-45,203.60

Finding the Fourth Proportional to 81,011.57, 111,796.37 and 45,203.60

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Solution

The fourth proportional to 81,011.57, 111,796.37 and 45,203.60 is: 62,381.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,011.57 : 111,796.37 = 45,203.60 : x
  2. Step 2: Convert to fraction form
    81,011.57/111,796.37 = 45,203.60/x
  3. Step 3: Cross multiply
    81,011.57x = 111,796.37 × 45,203.60
  4. Step 4: Simplify right side
    81,011.57x = 5,053,597,605.93
  5. Step 5: Solve for x
    x = 5,053,597,605.93/81,011.57
  6. Step 6: Final answer
    x = 62,381.19

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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.