Home / 72,770.46-100,438.17-42,563.21

Finding the Fourth Proportional to 72,770.46, 100,438.17 and 42,563.21

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Solution

The fourth proportional to 72,770.46, 100,438.17 and 42,563.21 is: 58,745.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,770.46 : 100,438.17 = 42,563.21 : x
  2. Step 2: Convert to fraction form
    72,770.46/100,438.17 = 42,563.21/x
  3. Step 3: Cross multiply
    72,770.46x = 100,438.17 × 42,563.21
  4. Step 4: Simplify right side
    72,770.46x = 4,274,970,206.72
  5. Step 5: Solve for x
    x = 4,274,970,206.72/72,770.46
  6. Step 6: Final answer
    x = 58,745.96

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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.