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Finding the Fourth Proportional to 74,674.80, 111,925.80 and 30,279.60

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Solution

The fourth proportional to 74,674.80, 111,925.80 and 30,279.60 is: 45,384.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,674.80 : 111,925.80 = 30,279.60 : x
  2. Step 2: Convert to fraction form
    74,674.80/111,925.80 = 30,279.60/x
  3. Step 3: Cross multiply
    74,674.80x = 111,925.80 × 30,279.60
  4. Step 4: Simplify right side
    74,674.80x = 3,389,068,453.68
  5. Step 5: Solve for x
    x = 3,389,068,453.68/74,674.80
  6. Step 6: Final answer
    x = 45,384.37

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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.