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Finding the Fourth Proportional to 30,066.51, 45,098.73 and 7,879.71

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Solution

The fourth proportional to 30,066.51, 45,098.73 and 7,879.71 is: 11,819.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,066.51 : 45,098.73 = 7,879.71 : x
  2. Step 2: Convert to fraction form
    30,066.51/45,098.73 = 7,879.71/x
  3. Step 3: Cross multiply
    30,066.51x = 45,098.73 × 7,879.71
  4. Step 4: Simplify right side
    30,066.51x = 355,364,913.77
  5. Step 5: Solve for x
    x = 355,364,913.77/30,066.51
  6. Step 6: Final answer
    x = 11,819.29

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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.