Home / 78,936.21-118,402.61-25,628.09

Finding the Fourth Proportional to 78,936.21, 118,402.61 and 25,628.09

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Solution

The fourth proportional to 78,936.21, 118,402.61 and 25,628.09 is: 38,441.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,936.21 : 118,402.61 = 25,628.09 : x
  2. Step 2: Convert to fraction form
    78,936.21/118,402.61 = 25,628.09/x
  3. Step 3: Cross multiply
    78,936.21x = 118,402.61 × 25,628.09
  4. Step 4: Simplify right side
    78,936.21x = 3,034,432,025.16
  5. Step 5: Solve for x
    x = 3,034,432,025.16/78,936.21
  6. Step 6: Final answer
    x = 38,441.57

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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.