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Finding the Fourth Proportional to 48,452.80, 72,679.20 and 30,870.40

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Solution

The fourth proportional to 48,452.80, 72,679.20 and 30,870.40 is: 46,305.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,452.80 : 72,679.20 = 30,870.40 : x
  2. Step 2: Convert to fraction form
    48,452.80/72,679.20 = 30,870.40/x
  3. Step 3: Cross multiply
    48,452.80x = 72,679.20 × 30,870.40
  4. Step 4: Simplify right side
    48,452.80x = 2,243,635,975.68
  5. Step 5: Solve for x
    x = 2,243,635,975.68/48,452.80
  6. Step 6: Final answer
    x = 46,305.60

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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.