Home / 79,205.08-109,172.82-63,261.40

Finding the Fourth Proportional to 79,205.08, 109,172.82 and 63,261.40

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Solution

The fourth proportional to 79,205.08, 109,172.82 and 63,261.40 is: 87,196.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,205.08 : 109,172.82 = 63,261.40 : x
  2. Step 2: Convert to fraction form
    79,205.08/109,172.82 = 63,261.40/x
  3. Step 3: Cross multiply
    79,205.08x = 109,172.82 × 63,261.40
  4. Step 4: Simplify right side
    79,205.08x = 6,906,425,435.15
  5. Step 5: Solve for x
    x = 6,906,425,435.15/79,205.08
  6. Step 6: Final answer
    x = 87,196.75

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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.