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Finding the Fourth Proportional to 48,474.80, 72,712.20 and 47,783.60

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Solution

The fourth proportional to 48,474.80, 72,712.20 and 47,783.60 is: 71,675.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,474.80 : 72,712.20 = 47,783.60 : x
  2. Step 2: Convert to fraction form
    48,474.80/72,712.20 = 47,783.60/x
  3. Step 3: Cross multiply
    48,474.80x = 72,712.20 × 47,783.60
  4. Step 4: Simplify right side
    48,474.80x = 3,474,450,679.92
  5. Step 5: Solve for x
    x = 3,474,450,679.92/48,474.80
  6. Step 6: Final answer
    x = 71,675.40

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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.