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Finding the Fourth Proportional to 48,986.40, 73,479.60 and 48,640.80

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Solution

The fourth proportional to 48,986.40, 73,479.60 and 48,640.80 is: 72,961.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,986.40 : 73,479.60 = 48,640.80 : x
  2. Step 2: Convert to fraction form
    48,986.40/73,479.60 = 48,640.80/x
  3. Step 3: Cross multiply
    48,986.40x = 73,479.60 × 48,640.80
  4. Step 4: Simplify right side
    48,986.40x = 3,574,106,527.68
  5. Step 5: Solve for x
    x = 3,574,106,527.68/48,986.40
  6. Step 6: Final answer
    x = 72,961.20

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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.