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Finding the Fourth Proportional to 48,690.64, 73,008 and 19,073.80

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Solution

The fourth proportional to 48,690.64, 73,008 and 19,073.80 is: 28,599.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,690.64 : 73,008 = 19,073.80 : x
  2. Step 2: Convert to fraction form
    48,690.64/73,008 = 19,073.80/x
  3. Step 3: Cross multiply
    48,690.64x = 73,008 × 19,073.80
  4. Step 4: Simplify right side
    48,690.64x = 1,392,539,990.40
  5. Step 5: Solve for x
    x = 1,392,539,990.40/48,690.64
  6. Step 6: Final answer
    x = 28,599.75

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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.