Home / 81,019.40-121,490.22-41,556.20

Finding the Fourth Proportional to 81,019.40, 121,490.22 and 41,556.20

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Solution

The fourth proportional to 81,019.40, 121,490.22 and 41,556.20 is: 62,314.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,019.40 : 121,490.22 = 41,556.20 : x
  2. Step 2: Convert to fraction form
    81,019.40/121,490.22 = 41,556.20/x
  3. Step 3: Cross multiply
    81,019.40x = 121,490.22 × 41,556.20
  4. Step 4: Simplify right side
    81,019.40x = 5,048,671,880.36
  5. Step 5: Solve for x
    x = 5,048,671,880.36/81,019.40
  6. Step 6: Final answer
    x = 62,314.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.