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Finding the Fourth Proportional to 80,416.80, 120,625.20 and 55,533.60

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Solution

The fourth proportional to 80,416.80, 120,625.20 and 55,533.60 is: 83,300.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,416.80 : 120,625.20 = 55,533.60 : x
  2. Step 2: Convert to fraction form
    80,416.80/120,625.20 = 55,533.60/x
  3. Step 3: Cross multiply
    80,416.80x = 120,625.20 × 55,533.60
  4. Step 4: Simplify right side
    80,416.80x = 6,698,751,606.72
  5. Step 5: Solve for x
    x = 6,698,751,606.72/80,416.80
  6. Step 6: Final answer
    x = 83,300.40

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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.