Home / 42,902.52-64,379.68-18,278.52

Finding the Fourth Proportional to 42,902.52, 64,379.68 and 18,278.52

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Solution

The fourth proportional to 42,902.52, 64,379.68 and 18,278.52 is: 27,428.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,902.52 : 64,379.68 = 18,278.52 : x
  2. Step 2: Convert to fraction form
    42,902.52/64,379.68 = 18,278.52/x
  3. Step 3: Cross multiply
    42,902.52x = 64,379.68 × 18,278.52
  4. Step 4: Simplify right side
    42,902.52x = 1,176,765,268.47
  5. Step 5: Solve for x
    x = 1,176,765,268.47/42,902.52
  6. Step 6: Final answer
    x = 27,428.81

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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.