Home / 45,489.60-68,234.40-14,320.80

Finding the Fourth Proportional to 45,489.60, 68,234.40 and 14,320.80

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Solution

The fourth proportional to 45,489.60, 68,234.40 and 14,320.80 is: 21,481.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,489.60 : 68,234.40 = 14,320.80 : x
  2. Step 2: Convert to fraction form
    45,489.60/68,234.40 = 14,320.80/x
  3. Step 3: Cross multiply
    45,489.60x = 68,234.40 × 14,320.80
  4. Step 4: Simplify right side
    45,489.60x = 977,171,195.52
  5. Step 5: Solve for x
    x = 977,171,195.52/45,489.60
  6. Step 6: Final answer
    x = 21,481.20

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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.