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Finding the Fourth Proportional to 80,483.40, 120,725.10 and 50,740.20

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Solution

The fourth proportional to 80,483.40, 120,725.10 and 50,740.20 is: 76,110.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,483.40 : 120,725.10 = 50,740.20 : x
  2. Step 2: Convert to fraction form
    80,483.40/120,725.10 = 50,740.20/x
  3. Step 3: Cross multiply
    80,483.40x = 120,725.10 × 50,740.20
  4. Step 4: Simplify right side
    80,483.40x = 6,125,615,719.02
  5. Step 5: Solve for x
    x = 6,125,615,719.02/80,483.40
  6. Step 6: Final answer
    x = 76,110.30

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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.