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Finding the Fourth Proportional to 79,205.40, 118,830.12 and 64,377.60

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Solution

The fourth proportional to 79,205.40, 118,830.12 and 64,377.60 is: 96,584.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,205.40 : 118,830.12 = 64,377.60 : x
  2. Step 2: Convert to fraction form
    79,205.40/118,830.12 = 64,377.60/x
  3. Step 3: Cross multiply
    79,205.40x = 118,830.12 × 64,377.60
  4. Step 4: Simplify right side
    79,205.40x = 7,649,997,933.31
  5. Step 5: Solve for x
    x = 7,649,997,933.31/79,205.40
  6. Step 6: Final answer
    x = 96,584.30

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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.