Home / 76,912.97-106,139.90-42,457.73

Finding the Fourth Proportional to 76,912.97, 106,139.90 and 42,457.73

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Solution

The fourth proportional to 76,912.97, 106,139.90 and 42,457.73 is: 58,591.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,912.97 : 106,139.90 = 42,457.73 : x
  2. Step 2: Convert to fraction form
    76,912.97/106,139.90 = 42,457.73/x
  3. Step 3: Cross multiply
    76,912.97x = 106,139.90 × 42,457.73
  4. Step 4: Simplify right side
    76,912.97x = 4,506,458,791.87
  5. Step 5: Solve for x
    x = 4,506,458,791.87/76,912.97
  6. Step 6: Final answer
    x = 58,591.67

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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.