Home / 42,790.70-64,186.05-28,793.90

Finding the Fourth Proportional to 42,790.70, 64,186.05 and 28,793.90

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Solution

The fourth proportional to 42,790.70, 64,186.05 and 28,793.90 is: 43,190.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,790.70 : 64,186.05 = 28,793.90 : x
  2. Step 2: Convert to fraction form
    42,790.70/64,186.05 = 28,793.90/x
  3. Step 3: Cross multiply
    42,790.70x = 64,186.05 × 28,793.90
  4. Step 4: Simplify right side
    42,790.70x = 1,848,166,705.10
  5. Step 5: Solve for x
    x = 1,848,166,705.10/42,790.70
  6. Step 6: Final answer
    x = 43,190.85

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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.