Home / 80,962.15-121,414.05-34,218.67

Finding the Fourth Proportional to 80,962.15, 121,414.05 and 34,218.67

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Solution

The fourth proportional to 80,962.15, 121,414.05 and 34,218.67 is: 51,315.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,962.15 : 121,414.05 = 34,218.67 : x
  2. Step 2: Convert to fraction form
    80,962.15/121,414.05 = 34,218.67/x
  3. Step 3: Cross multiply
    80,962.15x = 121,414.05 × 34,218.67
  4. Step 4: Simplify right side
    80,962.15x = 4,154,627,310.31
  5. Step 5: Solve for x
    x = 4,154,627,310.31/80,962.15
  6. Step 6: Final answer
    x = 51,315.67

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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.