Home / 80,926.90-121,391.47-31,009.52

Finding the Fourth Proportional to 80,926.90, 121,391.47 and 31,009.52

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Solution

The fourth proportional to 80,926.90, 121,391.47 and 31,009.52 is: 46,514.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,926.90 : 121,391.47 = 31,009.52 : x
  2. Step 2: Convert to fraction form
    80,926.90/121,391.47 = 31,009.52/x
  3. Step 3: Cross multiply
    80,926.90x = 121,391.47 × 31,009.52
  4. Step 4: Simplify right side
    80,926.90x = 3,764,291,216.79
  5. Step 5: Solve for x
    x = 3,764,291,216.79/80,926.90
  6. Step 6: Final answer
    x = 46,514.71

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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.