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Finding the Fourth Proportional to 45,059.40, 67,613.40 and 18,766.80

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Solution

The fourth proportional to 45,059.40, 67,613.40 and 18,766.80 is: 28,160.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,059.40 : 67,613.40 = 18,766.80 : x
  2. Step 2: Convert to fraction form
    45,059.40/67,613.40 = 18,766.80/x
  3. Step 3: Cross multiply
    45,059.40x = 67,613.40 × 18,766.80
  4. Step 4: Simplify right side
    45,059.40x = 1,268,887,155.12
  5. Step 5: Solve for x
    x = 1,268,887,155.12/45,059.40
  6. Step 6: Final answer
    x = 28,160.32

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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.