Home / 53,919.06-80,876.16-20,654.80

Finding the Fourth Proportional to 53,919.06, 80,876.16 and 20,654.80

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Solution

The fourth proportional to 53,919.06, 80,876.16 and 20,654.80 is: 30,981.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,919.06 : 80,876.16 = 20,654.80 : x
  2. Step 2: Convert to fraction form
    53,919.06/80,876.16 = 20,654.80/x
  3. Step 3: Cross multiply
    53,919.06x = 80,876.16 × 20,654.80
  4. Step 4: Simplify right side
    53,919.06x = 1,670,480,909.57
  5. Step 5: Solve for x
    x = 1,670,480,909.57/53,919.06
  6. Step 6: Final answer
    x = 30,981.27

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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.