Home / 78,836.48-118,256-26,245.12

Finding the Fourth Proportional to 78,836.48, 118,256 and 26,245.12

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Solution

The fourth proportional to 78,836.48, 118,256 and 26,245.12 is: 39,368.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,836.48 : 118,256 = 26,245.12 : x
  2. Step 2: Convert to fraction form
    78,836.48/118,256 = 26,245.12/x
  3. Step 3: Cross multiply
    78,836.48x = 118,256 × 26,245.12
  4. Step 4: Simplify right side
    78,836.48x = 3,103,642,910.72
  5. Step 5: Solve for x
    x = 3,103,642,910.72/78,836.48
  6. Step 6: Final answer
    x = 39,368.11

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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.