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Finding the Fourth Proportional to 45,098.54, 67,636.88 and 18,788.93

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Solution

The fourth proportional to 45,098.54, 67,636.88 and 18,788.93 is: 28,178.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,098.54 : 67,636.88 = 18,788.93 : x
  2. Step 2: Convert to fraction form
    45,098.54/67,636.88 = 18,788.93/x
  3. Step 3: Cross multiply
    45,098.54x = 67,636.88 × 18,788.93
  4. Step 4: Simplify right side
    45,098.54x = 1,270,824,171.61
  5. Step 5: Solve for x
    x = 1,270,824,171.61/45,098.54
  6. Step 6: Final answer
    x = 28,178.83

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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.