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Finding the Fourth Proportional to 80,597.40, 120,867.30 and 28,008.60

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Solution

The fourth proportional to 80,597.40, 120,867.30 and 28,008.60 is: 42,002.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,597.40 : 120,867.30 = 28,008.60 : x
  2. Step 2: Convert to fraction form
    80,597.40/120,867.30 = 28,008.60/x
  3. Step 3: Cross multiply
    80,597.40x = 120,867.30 × 28,008.60
  4. Step 4: Simplify right side
    80,597.40x = 3,385,323,858.78
  5. Step 5: Solve for x
    x = 3,385,323,858.78/80,597.40
  6. Step 6: Final answer
    x = 42,002.89

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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.