Home / 78,236.10-117,376.04-25,682.49

Finding the Fourth Proportional to 78,236.10, 117,376.04 and 25,682.49

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Solution

The fourth proportional to 78,236.10, 117,376.04 and 25,682.49 is: 38,530.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,236.10 : 117,376.04 = 25,682.49 : x
  2. Step 2: Convert to fraction form
    78,236.10/117,376.04 = 25,682.49/x
  3. Step 3: Cross multiply
    78,236.10x = 117,376.04 × 25,682.49
  4. Step 4: Simplify right side
    78,236.10x = 3,014,508,973.54
  5. Step 5: Solve for x
    x = 3,014,508,973.54/78,236.10
  6. Step 6: Final answer
    x = 38,530.92

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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.