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Finding the Fourth Proportional to 30,529.78, 45,789.88 and 8,344.88

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Solution

The fourth proportional to 30,529.78, 45,789.88 and 8,344.88 is: 12,516.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,529.78 : 45,789.88 = 8,344.88 : x
  2. Step 2: Convert to fraction form
    30,529.78/45,789.88 = 8,344.88/x
  3. Step 3: Cross multiply
    30,529.78x = 45,789.88 × 8,344.88
  4. Step 4: Simplify right side
    30,529.78x = 382,111,053.81
  5. Step 5: Solve for x
    x = 382,111,053.81/30,529.78
  6. Step 6: Final answer
    x = 12,516.01

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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.