Home / 86,101.36-118,821-52,109.44

Finding the Fourth Proportional to 86,101.36, 118,821 and 52,109.44

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Solution

The fourth proportional to 86,101.36, 118,821 and 52,109.44 is: 71,911.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,101.36 : 118,821 = 52,109.44 : x
  2. Step 2: Convert to fraction form
    86,101.36/118,821 = 52,109.44/x
  3. Step 3: Cross multiply
    86,101.36x = 118,821 × 52,109.44
  4. Step 4: Simplify right side
    86,101.36x = 6,191,695,770.24
  5. Step 5: Solve for x
    x = 6,191,695,770.24/86,101.36
  6. Step 6: Final answer
    x = 71,911.71

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1.5x scale

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.