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Finding the Fourth Proportional to 45,308.54, 67,985.08 and 20,366.22

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Solution

The fourth proportional to 45,308.54, 67,985.08 and 20,366.22 is: 30,559.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,308.54 : 67,985.08 = 20,366.22 : x
  2. Step 2: Convert to fraction form
    45,308.54/67,985.08 = 20,366.22/x
  3. Step 3: Cross multiply
    45,308.54x = 67,985.08 × 20,366.22
  4. Step 4: Simplify right side
    45,308.54x = 1,384,599,096.00
  5. Step 5: Solve for x
    x = 1,384,599,096.00/45,308.54
  6. Step 6: Final answer
    x = 30,559.34

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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.