Home / 55,115.42-76,067.00-39,851.54

Finding the Fourth Proportional to 55,115.42, 76,067.00 and 39,851.54

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Solution

The fourth proportional to 55,115.42, 76,067.00 and 39,851.54 is: 55,000.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,115.42 : 76,067.00 = 39,851.54 : x
  2. Step 2: Convert to fraction form
    55,115.42/76,067.00 = 39,851.54/x
  3. Step 3: Cross multiply
    55,115.42x = 76,067.00 × 39,851.54
  4. Step 4: Simplify right side
    55,115.42x = 3,031,386,513.59
  5. Step 5: Solve for x
    x = 3,031,386,513.59/55,115.42
  6. Step 6: Final answer
    x = 55,000.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.