Home / 45,330.18-67,971.88-20,348.80

Finding the Fourth Proportional to 45,330.18, 67,971.88 and 20,348.80

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Solution

The fourth proportional to 45,330.18, 67,971.88 and 20,348.80 is: 30,512.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,330.18 : 67,971.88 = 20,348.80 : x
  2. Step 2: Convert to fraction form
    45,330.18/67,971.88 = 20,348.80/x
  3. Step 3: Cross multiply
    45,330.18x = 67,971.88 × 20,348.80
  4. Step 4: Simplify right side
    45,330.18x = 1,383,146,191.74
  5. Step 5: Solve for x
    x = 1,383,146,191.74/45,330.18
  6. Step 6: Final answer
    x = 30,512.70

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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.