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Finding the Fourth Proportional to 30,207.60, 45,311.40 and 25,736.40

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Solution

The fourth proportional to 30,207.60, 45,311.40 and 25,736.40 is: 38,604.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,207.60 : 45,311.40 = 25,736.40 : x
  2. Step 2: Convert to fraction form
    30,207.60/45,311.40 = 25,736.40/x
  3. Step 3: Cross multiply
    30,207.60x = 45,311.40 × 25,736.40
  4. Step 4: Simplify right side
    30,207.60x = 1,166,152,314.96
  5. Step 5: Solve for x
    x = 1,166,152,314.96/30,207.60
  6. Step 6: Final answer
    x = 38,604.60

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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.