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Finding the Fourth Proportional to 74,182.80, 111,252.60 and 40,918.80

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Solution

The fourth proportional to 74,182.80, 111,252.60 and 40,918.80 is: 61,366.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,182.80 : 111,252.60 = 40,918.80 : x
  2. Step 2: Convert to fraction form
    74,182.80/111,252.60 = 40,918.80/x
  3. Step 3: Cross multiply
    74,182.80x = 111,252.60 × 40,918.80
  4. Step 4: Simplify right side
    74,182.80x = 4,552,322,888.88
  5. Step 5: Solve for x
    x = 4,552,322,888.88/74,182.80
  6. Step 6: Final answer
    x = 61,366.29

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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.