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Finding the Fourth Proportional to 114,729.80, 172,094.70 and 30,489.80

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Solution

The fourth proportional to 114,729.80, 172,094.70 and 30,489.80 is: 45,734.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,729.80 : 172,094.70 = 30,489.80 : x
  2. Step 2: Convert to fraction form
    114,729.80/172,094.70 = 30,489.80/x
  3. Step 3: Cross multiply
    114,729.80x = 172,094.70 × 30,489.80
  4. Step 4: Simplify right side
    114,729.80x = 5,247,132,984.06
  5. Step 5: Solve for x
    x = 5,247,132,984.06/114,729.80
  6. Step 6: Final answer
    x = 45,734.70

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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.