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Finding the Fourth Proportional to 32,985.50, 45,520 and 18,081.50

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Solution

The fourth proportional to 32,985.50, 45,520 and 18,081.50 is: 24,952.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,985.50 : 45,520 = 18,081.50 : x
  2. Step 2: Convert to fraction form
    32,985.50/45,520 = 18,081.50/x
  3. Step 3: Cross multiply
    32,985.50x = 45,520 × 18,081.50
  4. Step 4: Simplify right side
    32,985.50x = 823,069,880
  5. Step 5: Solve for x
    x = 823,069,880/32,985.50
  6. Step 6: Final answer
    x = 24,952.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.