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Finding the Fourth Proportional to 80,602.10, 120,903.15 and 43,277.30

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Solution

The fourth proportional to 80,602.10, 120,903.15 and 43,277.30 is: 64,915.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,602.10 : 120,903.15 = 43,277.30 : x
  2. Step 2: Convert to fraction form
    80,602.10/120,903.15 = 43,277.30/x
  3. Step 3: Cross multiply
    80,602.10x = 120,903.15 × 43,277.30
  4. Step 4: Simplify right side
    80,602.10x = 5,232,361,893.50
  5. Step 5: Solve for x
    x = 5,232,361,893.50/80,602.10
  6. Step 6: Final answer
    x = 64,915.95

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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.