Home / 78,481.04-117,655.87-36,391.16

Finding the Fourth Proportional to 78,481.04, 117,655.87 and 36,391.16

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Solution

The fourth proportional to 78,481.04, 117,655.87 and 36,391.16 is: 54,556.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,481.04 : 117,655.87 = 36,391.16 : x
  2. Step 2: Convert to fraction form
    78,481.04/117,655.87 = 36,391.16/x
  3. Step 3: Cross multiply
    78,481.04x = 117,655.87 × 36,391.16
  4. Step 4: Simplify right side
    78,481.04x = 4,281,633,590.11
  5. Step 5: Solve for x
    x = 4,281,633,590.11/78,481.04
  6. Step 6: Final answer
    x = 54,556.28

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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.