Home / 45,287.96-67,910.10-18,985.64

Finding the Fourth Proportional to 45,287.96, 67,910.10 and 18,985.64

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Solution

The fourth proportional to 45,287.96, 67,910.10 and 18,985.64 is: 28,469.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,287.96 : 67,910.10 = 18,985.64 : x
  2. Step 2: Convert to fraction form
    45,287.96/67,910.10 = 18,985.64/x
  3. Step 3: Cross multiply
    45,287.96x = 67,910.10 × 18,985.64
  4. Step 4: Simplify right side
    45,287.96x = 1,289,316,710.96
  5. Step 5: Solve for x
    x = 1,289,316,710.96/45,287.96
  6. Step 6: Final answer
    x = 28,469.30

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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.