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Finding the Fourth Proportional to 172,990.08, 259,528.32 and 48,330

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Solution

The fourth proportional to 172,990.08, 259,528.32 and 48,330 is: 72,507.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,990.08 : 259,528.32 = 48,330 : x
  2. Step 2: Convert to fraction form
    172,990.08/259,528.32 = 48,330/x
  3. Step 3: Cross multiply
    172,990.08x = 259,528.32 × 48,330
  4. Step 4: Simplify right side
    172,990.08x = 12,543,003,705.60
  5. Step 5: Solve for x
    x = 12,543,003,705.60/172,990.08
  6. Step 6: Final answer
    x = 72,507.07

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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.