Home / 80,340.04-120,394.60-45,205.48

Finding the Fourth Proportional to 80,340.04, 120,394.60 and 45,205.48

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Solution

The fourth proportional to 80,340.04, 120,394.60 and 45,205.48 is: 67,743.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,340.04 : 120,394.60 = 45,205.48 : x
  2. Step 2: Convert to fraction form
    80,340.04/120,394.60 = 45,205.48/x
  3. Step 3: Cross multiply
    80,340.04x = 120,394.60 × 45,205.48
  4. Step 4: Simplify right side
    80,340.04x = 5,442,495,682.41
  5. Step 5: Solve for x
    x = 5,442,495,682.41/80,340.04
  6. Step 6: Final answer
    x = 67,743.25

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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.