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Finding the Fourth Proportional to 48,643.20, 72,924.30 and 20,584.80

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Solution

The fourth proportional to 48,643.20, 72,924.30 and 20,584.80 is: 30,860.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,643.20 : 72,924.30 = 20,584.80 : x
  2. Step 2: Convert to fraction form
    48,643.20/72,924.30 = 20,584.80/x
  3. Step 3: Cross multiply
    48,643.20x = 72,924.30 × 20,584.80
  4. Step 4: Simplify right side
    48,643.20x = 1,501,132,130.64
  5. Step 5: Solve for x
    x = 1,501,132,130.64/48,643.20
  6. Step 6: Final answer
    x = 30,860.06

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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.