Home / 80,291.64-120,347.25-38,137.23

Finding the Fourth Proportional to 80,291.64, 120,347.25 and 38,137.23

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Solution

The fourth proportional to 80,291.64, 120,347.25 and 38,137.23 is: 57,163.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,291.64 : 120,347.25 = 38,137.23 : x
  2. Step 2: Convert to fraction form
    80,291.64/120,347.25 = 38,137.23/x
  3. Step 3: Cross multiply
    80,291.64x = 120,347.25 × 38,137.23
  4. Step 4: Simplify right side
    80,291.64x = 4,589,710,753.12
  5. Step 5: Solve for x
    x = 4,589,710,753.12/80,291.64
  6. Step 6: Final answer
    x = 57,163.00

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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.