Home / 76,629.17-105,745.56-42,170.67

Finding the Fourth Proportional to 76,629.17, 105,745.56 and 42,170.67

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Solution

The fourth proportional to 76,629.17, 105,745.56 and 42,170.67 is: 58,194.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,629.17 : 105,745.56 = 42,170.67 : x
  2. Step 2: Convert to fraction form
    76,629.17/105,745.56 = 42,170.67/x
  3. Step 3: Cross multiply
    76,629.17x = 105,745.56 × 42,170.67
  4. Step 4: Simplify right side
    76,629.17x = 4,459,361,114.73
  5. Step 5: Solve for x
    x = 4,459,361,114.73/76,629.17
  6. Step 6: Final answer
    x = 58,194.05

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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.