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Finding the Fourth Proportional to 72,770.76, 109,182.84 and 30,661.44

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Solution

The fourth proportional to 72,770.76, 109,182.84 and 30,661.44 is: 46,003.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,770.76 : 109,182.84 = 30,661.44 : x
  2. Step 2: Convert to fraction form
    72,770.76/109,182.84 = 30,661.44/x
  3. Step 3: Cross multiply
    72,770.76x = 109,182.84 × 30,661.44
  4. Step 4: Simplify right side
    72,770.76x = 3,347,703,097.69
  5. Step 5: Solve for x
    x = 3,347,703,097.69/72,770.76
  6. Step 6: Final answer
    x = 46,003.41

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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.