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Finding the Fourth Proportional to 79,147.26, 118,706.04 and 39,693.78

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Solution

The fourth proportional to 79,147.26, 118,706.04 and 39,693.78 is: 59,533.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,147.26 : 118,706.04 = 39,693.78 : x
  2. Step 2: Convert to fraction form
    79,147.26/118,706.04 = 39,693.78/x
  3. Step 3: Cross multiply
    79,147.26x = 118,706.04 × 39,693.78
  4. Step 4: Simplify right side
    79,147.26x = 4,711,891,436.43
  5. Step 5: Solve for x
    x = 4,711,891,436.43/79,147.26
  6. Step 6: Final answer
    x = 59,533.22

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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.