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Finding the Fourth Proportional to 74,467.60, 111,701.40 and 42,974.80

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Solution

The fourth proportional to 74,467.60, 111,701.40 and 42,974.80 is: 64,462.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,467.60 : 111,701.40 = 42,974.80 : x
  2. Step 2: Convert to fraction form
    74,467.60/111,701.40 = 42,974.80/x
  3. Step 3: Cross multiply
    74,467.60x = 111,701.40 × 42,974.80
  4. Step 4: Simplify right side
    74,467.60x = 4,800,345,324.72
  5. Step 5: Solve for x
    x = 4,800,345,324.72/74,467.60
  6. Step 6: Final answer
    x = 64,462.20

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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.