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Finding the Fourth Proportional to 30,190.56, 45,281.44 and 8,005.28

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Solution

The fourth proportional to 30,190.56, 45,281.44 and 8,005.28 is: 12,006.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,190.56 : 45,281.44 = 8,005.28 : x
  2. Step 2: Convert to fraction form
    30,190.56/45,281.44 = 8,005.28/x
  3. Step 3: Cross multiply
    30,190.56x = 45,281.44 × 8,005.28
  4. Step 4: Simplify right side
    30,190.56x = 362,490,606.00
  5. Step 5: Solve for x
    x = 362,490,606.00/30,190.56
  6. Step 6: Final answer
    x = 12,006.75

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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.