Home / 40,015-54,820.35-38,519.80

Finding the Fourth Proportional to 40,015, 54,820.35 and 38,519.80

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Solution

The fourth proportional to 40,015, 54,820.35 and 38,519.80 is: 52,771.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,015 : 54,820.35 = 38,519.80 : x
  2. Step 2: Convert to fraction form
    40,015/54,820.35 = 38,519.80/x
  3. Step 3: Cross multiply
    40,015x = 54,820.35 × 38,519.80
  4. Step 4: Simplify right side
    40,015x = 2,111,668,917.93
  5. Step 5: Solve for x
    x = 2,111,668,917.93/40,015
  6. Step 6: Final answer
    x = 52,771.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.