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Finding the Fourth Proportional to 48,987.20, 73,480.80 and 25,620.80

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Solution

The fourth proportional to 48,987.20, 73,480.80 and 25,620.80 is: 38,431.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,987.20 : 73,480.80 = 25,620.80 : x
  2. Step 2: Convert to fraction form
    48,987.20/73,480.80 = 25,620.80/x
  3. Step 3: Cross multiply
    48,987.20x = 73,480.80 × 25,620.80
  4. Step 4: Simplify right side
    48,987.20x = 1,882,636,880.64
  5. Step 5: Solve for x
    x = 1,882,636,880.64/48,987.20
  6. Step 6: Final answer
    x = 38,431.20

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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.