Home / 81,161.55-112,002.30-45,351.18

Finding the Fourth Proportional to 81,161.55, 112,002.30 and 45,351.18

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Solution

The fourth proportional to 81,161.55, 112,002.30 and 45,351.18 is: 62,584.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,161.55 : 112,002.30 = 45,351.18 : x
  2. Step 2: Convert to fraction form
    81,161.55/112,002.30 = 45,351.18/x
  3. Step 3: Cross multiply
    81,161.55x = 112,002.30 × 45,351.18
  4. Step 4: Simplify right side
    81,161.55x = 5,079,436,467.71
  5. Step 5: Solve for x
    x = 5,079,436,467.71/81,161.55
  6. Step 6: Final answer
    x = 62,584.27

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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.