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Finding the Fourth Proportional to 30,146.54, 45,221.96 and 7,959.69

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Solution

The fourth proportional to 30,146.54, 45,221.96 and 7,959.69 is: 11,940.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,146.54 : 45,221.96 = 7,959.69 : x
  2. Step 2: Convert to fraction form
    30,146.54/45,221.96 = 7,959.69/x
  3. Step 3: Cross multiply
    30,146.54x = 45,221.96 × 7,959.69
  4. Step 4: Simplify right side
    30,146.54x = 359,952,802.69
  5. Step 5: Solve for x
    x = 359,952,802.69/30,146.54
  6. Step 6: Final answer
    x = 11,940.11

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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.