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Finding the Fourth Proportional to 86,139.94, 118,873.12 and 48,414.19

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Solution

The fourth proportional to 86,139.94, 118,873.12 and 48,414.19 is: 66,811.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,139.94 : 118,873.12 = 48,414.19 : x
  2. Step 2: Convert to fraction form
    86,139.94/118,873.12 = 48,414.19/x
  3. Step 3: Cross multiply
    86,139.94x = 118,873.12 × 48,414.19
  4. Step 4: Simplify right side
    86,139.94x = 5,755,145,399.35
  5. Step 5: Solve for x
    x = 5,755,145,399.35/86,139.94
  6. Step 6: Final answer
    x = 66,811.58

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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.