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Finding the Fourth Proportional to 73,906.40, 110,859.60 and 67,782.80

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Solution

The fourth proportional to 73,906.40, 110,859.60 and 67,782.80 is: 101,674.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,906.40 : 110,859.60 = 67,782.80 : x
  2. Step 2: Convert to fraction form
    73,906.40/110,859.60 = 67,782.80/x
  3. Step 3: Cross multiply
    73,906.40x = 110,859.60 × 67,782.80
  4. Step 4: Simplify right side
    73,906.40x = 7,514,374,094.88
  5. Step 5: Solve for x
    x = 7,514,374,094.88/73,906.40
  6. Step 6: Final answer
    x = 101,674.20

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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.