Home / 86,086.08-118,765.50-63,478.56

Finding the Fourth Proportional to 86,086.08, 118,765.50 and 63,478.56

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Solution

The fourth proportional to 86,086.08, 118,765.50 and 63,478.56 is: 87,575.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,086.08 : 118,765.50 = 63,478.56 : x
  2. Step 2: Convert to fraction form
    86,086.08/118,765.50 = 63,478.56/x
  3. Step 3: Cross multiply
    86,086.08x = 118,765.50 × 63,478.56
  4. Step 4: Simplify right side
    86,086.08x = 7,539,062,917.68
  5. Step 5: Solve for x
    x = 7,539,062,917.68/86,086.08
  6. Step 6: Final answer
    x = 87,575.86

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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.