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Finding the Fourth Proportional to 48,551.25, 72,844.29 and 18,990.30

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Solution

The fourth proportional to 48,551.25, 72,844.29 and 18,990.30 is: 28,492.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,551.25 : 72,844.29 = 18,990.30 : x
  2. Step 2: Convert to fraction form
    48,551.25/72,844.29 = 18,990.30/x
  3. Step 3: Cross multiply
    48,551.25x = 72,844.29 × 18,990.30
  4. Step 4: Simplify right side
    48,551.25x = 1,383,334,920.39
  5. Step 5: Solve for x
    x = 1,383,334,920.39/48,551.25
  6. Step 6: Final answer
    x = 28,492.26

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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.