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Finding the Fourth Proportional to 30,470.92, 45,678.93 and 10,745.98

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Solution

The fourth proportional to 30,470.92, 45,678.93 and 10,745.98 is: 16,109.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,470.92 : 45,678.93 = 10,745.98 : x
  2. Step 2: Convert to fraction form
    30,470.92/45,678.93 = 10,745.98/x
  3. Step 3: Cross multiply
    30,470.92x = 45,678.93 × 10,745.98
  4. Step 4: Simplify right side
    30,470.92x = 490,864,868.20
  5. Step 5: Solve for x
    x = 490,864,868.20/30,470.92
  6. Step 6: Final answer
    x = 16,109.29

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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.