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Finding the Fourth Proportional to 48,583, 72,874.49 and 18,980.07

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Solution

The fourth proportional to 48,583, 72,874.49 and 18,980.07 is: 28,470.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,583 : 72,874.49 = 18,980.07 : x
  2. Step 2: Convert to fraction form
    48,583/72,874.49 = 18,980.07/x
  3. Step 3: Cross multiply
    48,583x = 72,874.49 × 18,980.07
  4. Step 4: Simplify right side
    48,583x = 1,383,162,921.41
  5. Step 5: Solve for x
    x = 1,383,162,921.41/48,583
  6. Step 6: Final answer
    x = 28,470.10

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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.