Home / 79,683.22-109,725.48-77,915.06

Finding the Fourth Proportional to 79,683.22, 109,725.48 and 77,915.06

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Solution

The fourth proportional to 79,683.22, 109,725.48 and 77,915.06 is: 107,290.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,683.22 : 109,725.48 = 77,915.06 : x
  2. Step 2: Convert to fraction form
    79,683.22/109,725.48 = 77,915.06/x
  3. Step 3: Cross multiply
    79,683.22x = 109,725.48 × 77,915.06
  4. Step 4: Simplify right side
    79,683.22x = 8,549,267,357.73
  5. Step 5: Solve for x
    x = 8,549,267,357.73/79,683.22
  6. Step 6: Final answer
    x = 107,290.69

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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.