Home / 42,705.20-64,122.60-32,855.60

Finding the Fourth Proportional to 42,705.20, 64,122.60 and 32,855.60

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Solution

The fourth proportional to 42,705.20, 64,122.60 and 32,855.60 is: 49,333.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,705.20 : 64,122.60 = 32,855.60 : x
  2. Step 2: Convert to fraction form
    42,705.20/64,122.60 = 32,855.60/x
  3. Step 3: Cross multiply
    42,705.20x = 64,122.60 × 32,855.60
  4. Step 4: Simplify right side
    42,705.20x = 2,106,786,496.56
  5. Step 5: Solve for x
    x = 2,106,786,496.56/42,705.20
  6. Step 6: Final answer
    x = 49,333.25

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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.