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Finding the Fourth Proportional to 30,331.20, 45,496.80 and 29,164.80

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Solution

The fourth proportional to 30,331.20, 45,496.80 and 29,164.80 is: 43,747.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,331.20 : 45,496.80 = 29,164.80 : x
  2. Step 2: Convert to fraction form
    30,331.20/45,496.80 = 29,164.80/x
  3. Step 3: Cross multiply
    30,331.20x = 45,496.80 × 29,164.80
  4. Step 4: Simplify right side
    30,331.20x = 1,326,905,072.64
  5. Step 5: Solve for x
    x = 1,326,905,072.64/30,331.20
  6. Step 6: Final answer
    x = 43,747.20

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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.