Home / 80,961.15-121,412.55-34,217.67

Finding the Fourth Proportional to 80,961.15, 121,412.55 and 34,217.67

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Solution

The fourth proportional to 80,961.15, 121,412.55 and 34,217.67 is: 51,314.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,961.15 : 121,412.55 = 34,217.67 : x
  2. Step 2: Convert to fraction form
    80,961.15/121,412.55 = 34,217.67/x
  3. Step 3: Cross multiply
    80,961.15x = 121,412.55 × 34,217.67
  4. Step 4: Simplify right side
    80,961.15x = 4,154,455,153.37
  5. Step 5: Solve for x
    x = 4,154,455,153.37/80,961.15
  6. Step 6: Final answer
    x = 51,314.18

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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.