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Finding the Fourth Proportional to 80,573.40, 120,860.10 and 73,056.60

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Solution

The fourth proportional to 80,573.40, 120,860.10 and 73,056.60 is: 109,584.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,573.40 : 120,860.10 = 73,056.60 : x
  2. Step 2: Convert to fraction form
    80,573.40/120,860.10 = 73,056.60/x
  3. Step 3: Cross multiply
    80,573.40x = 120,860.10 × 73,056.60
  4. Step 4: Simplify right side
    80,573.40x = 8,829,627,981.66
  5. Step 5: Solve for x
    x = 8,829,627,981.66/80,573.40
  6. Step 6: Final answer
    x = 109,584.90

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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.