Home / 45,287.88-67,909.97-18,985.56

Finding the Fourth Proportional to 45,287.88, 67,909.97 and 18,985.56

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Solution

The fourth proportional to 45,287.88, 67,909.97 and 18,985.56 is: 28,469.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,287.88 : 67,909.97 = 18,985.56 : x
  2. Step 2: Convert to fraction form
    45,287.88/67,909.97 = 18,985.56/x
  3. Step 3: Cross multiply
    45,287.88x = 67,909.97 × 18,985.56
  4. Step 4: Simplify right side
    45,287.88x = 1,289,308,810.03
  5. Step 5: Solve for x
    x = 1,289,308,810.03/45,287.88
  6. Step 6: Final answer
    x = 28,469.18

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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.