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Finding the Fourth Proportional to 47,996.40, 71,994.60 and 30,543.60

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Solution

The fourth proportional to 47,996.40, 71,994.60 and 30,543.60 is: 45,815.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,996.40 : 71,994.60 = 30,543.60 : x
  2. Step 2: Convert to fraction form
    47,996.40/71,994.60 = 30,543.60/x
  3. Step 3: Cross multiply
    47,996.40x = 71,994.60 × 30,543.60
  4. Step 4: Simplify right side
    47,996.40x = 2,198,974,264.56
  5. Step 5: Solve for x
    x = 2,198,974,264.56/47,996.40
  6. Step 6: Final answer
    x = 45,815.40

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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.