Home / 80,817.16-111,519.70-45,010.51

Finding the Fourth Proportional to 80,817.16, 111,519.70 and 45,010.51

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Solution

The fourth proportional to 80,817.16, 111,519.70 and 45,010.51 is: 62,110.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,817.16 : 111,519.70 = 45,010.51 : x
  2. Step 2: Convert to fraction form
    80,817.16/111,519.70 = 45,010.51/x
  3. Step 3: Cross multiply
    80,817.16x = 111,519.70 × 45,010.51
  4. Step 4: Simplify right side
    80,817.16x = 5,019,558,014.45
  5. Step 5: Solve for x
    x = 5,019,558,014.45/80,817.16
  6. Step 6: Final answer
    x = 62,110.05

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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.