Home / 80,555.21-111,197.18-53,687.91

Finding the Fourth Proportional to 80,555.21, 111,197.18 and 53,687.91

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Solution

The fourth proportional to 80,555.21, 111,197.18 and 53,687.91 is: 74,109.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,555.21 : 111,197.18 = 53,687.91 : x
  2. Step 2: Convert to fraction form
    80,555.21/111,197.18 = 53,687.91/x
  3. Step 3: Cross multiply
    80,555.21x = 111,197.18 × 53,687.91
  4. Step 4: Simplify right side
    80,555.21x = 5,969,944,326.31
  5. Step 5: Solve for x
    x = 5,969,944,326.31/80,555.21
  6. Step 6: Final answer
    x = 74,109.98

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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.