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Finding the Fourth Proportional to 47,793.80, 71,690.70 and 30,283.40

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Solution

The fourth proportional to 47,793.80, 71,690.70 and 30,283.40 is: 45,425.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,793.80 : 71,690.70 = 30,283.40 : x
  2. Step 2: Convert to fraction form
    47,793.80/71,690.70 = 30,283.40/x
  3. Step 3: Cross multiply
    47,793.80x = 71,690.70 × 30,283.40
  4. Step 4: Simplify right side
    47,793.80x = 2,171,038,144.38
  5. Step 5: Solve for x
    x = 2,171,038,144.38/47,793.80
  6. Step 6: Final answer
    x = 45,425.10

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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.