Home / 80,808.11-121,171.61-47,085.03

Finding the Fourth Proportional to 80,808.11, 121,171.61 and 47,085.03

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Solution

The fourth proportional to 80,808.11, 121,171.61 and 47,085.03 is: 70,603.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,808.11 : 121,171.61 = 47,085.03 : x
  2. Step 2: Convert to fraction form
    80,808.11/121,171.61 = 47,085.03/x
  3. Step 3: Cross multiply
    80,808.11x = 121,171.61 × 47,085.03
  4. Step 4: Simplify right side
    80,808.11x = 5,705,368,050.72
  5. Step 5: Solve for x
    x = 5,705,368,050.72/80,808.11
  6. Step 6: Final answer
    x = 70,603.90

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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.