Home / 42,788.64-64,183.14-28,090.56

Finding the Fourth Proportional to 42,788.64, 64,183.14 and 28,090.56

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Solution

The fourth proportional to 42,788.64, 64,183.14 and 28,090.56 is: 42,135.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,788.64 : 64,183.14 = 28,090.56 : x
  2. Step 2: Convert to fraction form
    42,788.64/64,183.14 = 28,090.56/x
  3. Step 3: Cross multiply
    42,788.64x = 64,183.14 × 28,090.56
  4. Step 4: Simplify right side
    42,788.64x = 1,802,940,345.16
  5. Step 5: Solve for x
    x = 1,802,940,345.16/42,788.64
  6. Step 6: Final answer
    x = 42,135.96

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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.