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Finding the Fourth Proportional to 47,990, 66,226.26 and 26,770.62

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Solution

The fourth proportional to 47,990, 66,226.26 and 26,770.62 is: 36,943.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,990 : 66,226.26 = 26,770.62 : x
  2. Step 2: Convert to fraction form
    47,990/66,226.26 = 26,770.62/x
  3. Step 3: Cross multiply
    47,990x = 66,226.26 × 26,770.62
  4. Step 4: Simplify right side
    47,990x = 1,772,918,040.48
  5. Step 5: Solve for x
    x = 1,772,918,040.48/47,990
  6. Step 6: Final answer
    x = 36,943.49

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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.