Home / 86,221.26-118,974.89-47,971.78

Finding the Fourth Proportional to 86,221.26, 118,974.89 and 47,971.78

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Solution

The fourth proportional to 86,221.26, 118,974.89 and 47,971.78 is: 66,195.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,221.26 : 118,974.89 = 47,971.78 : x
  2. Step 2: Convert to fraction form
    86,221.26/118,974.89 = 47,971.78/x
  3. Step 3: Cross multiply
    86,221.26x = 118,974.89 × 47,971.78
  4. Step 4: Simplify right side
    86,221.26x = 5,707,437,248.60
  5. Step 5: Solve for x
    x = 5,707,437,248.60/86,221.26
  6. Step 6: Final answer
    x = 66,195.24

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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.