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Finding the Fourth Proportional to 45,403.60, 68,105.40 and 25,720.60

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Solution

The fourth proportional to 45,403.60, 68,105.40 and 25,720.60 is: 38,580.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,403.60 : 68,105.40 = 25,720.60 : x
  2. Step 2: Convert to fraction form
    45,403.60/68,105.40 = 25,720.60/x
  3. Step 3: Cross multiply
    45,403.60x = 68,105.40 × 25,720.60
  4. Step 4: Simplify right side
    45,403.60x = 1,751,711,751.24
  5. Step 5: Solve for x
    x = 1,751,711,751.24/45,403.60
  6. Step 6: Final answer
    x = 38,580.90

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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.