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Finding the Fourth Proportional to 45,006, 67,472.55 and 18,730.41

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Solution

The fourth proportional to 45,006, 67,472.55 and 18,730.41 is: 28,080.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,006 : 67,472.55 = 18,730.41 : x
  2. Step 2: Convert to fraction form
    45,006/67,472.55 = 18,730.41/x
  3. Step 3: Cross multiply
    45,006x = 67,472.55 × 18,730.41
  4. Step 4: Simplify right side
    45,006x = 1,263,788,525.25
  5. Step 5: Solve for x
    x = 1,263,788,525.25/45,006
  6. Step 6: Final answer
    x = 28,080.45

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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.