Home / 66,106.83-91,213.17-39,258.37

Finding the Fourth Proportional to 66,106.83, 91,213.17 and 39,258.37

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Solution

The fourth proportional to 66,106.83, 91,213.17 and 39,258.37 is: 54,168.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,106.83 : 91,213.17 = 39,258.37 : x
  2. Step 2: Convert to fraction form
    66,106.83/91,213.17 = 39,258.37/x
  3. Step 3: Cross multiply
    66,106.83x = 91,213.17 × 39,258.37
  4. Step 4: Simplify right side
    66,106.83x = 3,580,879,920.67
  5. Step 5: Solve for x
    x = 3,580,879,920.67/66,106.83
  6. Step 6: Final answer
    x = 54,168.08

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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.