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Finding the Fourth Proportional to 30,066.52, 45,098.72 and 7,879.72

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Solution

The fourth proportional to 30,066.52, 45,098.72 and 7,879.72 is: 11,819.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,066.52 : 45,098.72 = 7,879.72 : x
  2. Step 2: Convert to fraction form
    30,066.52/45,098.72 = 7,879.72/x
  3. Step 3: Cross multiply
    30,066.52x = 45,098.72 × 7,879.72
  4. Step 4: Simplify right side
    30,066.52x = 355,365,285.96
  5. Step 5: Solve for x
    x = 355,365,285.96/30,066.52
  6. Step 6: Final answer
    x = 11,819.30

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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.