Home / 78,743.75-108,666.36-42,933.85

Finding the Fourth Proportional to 78,743.75, 108,666.36 and 42,933.85

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Solution

The fourth proportional to 78,743.75, 108,666.36 and 42,933.85 is: 59,248.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,743.75 : 108,666.36 = 42,933.85 : x
  2. Step 2: Convert to fraction form
    78,743.75/108,666.36 = 42,933.85/x
  3. Step 3: Cross multiply
    78,743.75x = 108,666.36 × 42,933.85
  4. Step 4: Simplify right side
    78,743.75x = 4,665,464,928.62
  5. Step 5: Solve for x
    x = 4,665,464,928.62/78,743.75
  6. Step 6: Final answer
    x = 59,248.71

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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.