Home / 78,253.24-117,388.98-28,356.84

Finding the Fourth Proportional to 78,253.24, 117,388.98 and 28,356.84

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Solution

The fourth proportional to 78,253.24, 117,388.98 and 28,356.84 is: 42,538.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,253.24 : 117,388.98 = 28,356.84 : x
  2. Step 2: Convert to fraction form
    78,253.24/117,388.98 = 28,356.84/x
  3. Step 3: Cross multiply
    78,253.24x = 117,388.98 × 28,356.84
  4. Step 4: Simplify right side
    78,253.24x = 3,328,780,523.62
  5. Step 5: Solve for x
    x = 3,328,780,523.62/78,253.24
  6. Step 6: Final answer
    x = 42,538.56

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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.