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Finding the Fourth Proportional to 45,196.80, 67,783.05 and 18,896.10

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Solution

The fourth proportional to 45,196.80, 67,783.05 and 18,896.10 is: 28,339.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,196.80 : 67,783.05 = 18,896.10 : x
  2. Step 2: Convert to fraction form
    45,196.80/67,783.05 = 18,896.10/x
  3. Step 3: Cross multiply
    45,196.80x = 67,783.05 × 18,896.10
  4. Step 4: Simplify right side
    45,196.80x = 1,280,835,291.11
  5. Step 5: Solve for x
    x = 1,280,835,291.11/45,196.80
  6. Step 6: Final answer
    x = 28,339.07

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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.