Home / 78,570.35-108,153.24-68,481.26

Finding the Fourth Proportional to 78,570.35, 108,153.24 and 68,481.26

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Solution

The fourth proportional to 78,570.35, 108,153.24 and 68,481.26 is: 94,265.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,570.35 : 108,153.24 = 68,481.26 : x
  2. Step 2: Convert to fraction form
    78,570.35/108,153.24 = 68,481.26/x
  3. Step 3: Cross multiply
    78,570.35x = 108,153.24 × 68,481.26
  4. Step 4: Simplify right side
    78,570.35x = 7,406,470,148.28
  5. Step 5: Solve for x
    x = 7,406,470,148.28/78,570.35
  6. Step 6: Final answer
    x = 94,265.46

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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.