Home / 83,817.32-115,662.74-47,999.12

Finding the Fourth Proportional to 83,817.32, 115,662.74 and 47,999.12

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Solution

The fourth proportional to 83,817.32, 115,662.74 and 47,999.12 is: 66,235.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,817.32 : 115,662.74 = 47,999.12 : x
  2. Step 2: Convert to fraction form
    83,817.32/115,662.74 = 47,999.12/x
  3. Step 3: Cross multiply
    83,817.32x = 115,662.74 × 47,999.12
  4. Step 4: Simplify right side
    83,817.32x = 5,551,709,736.79
  5. Step 5: Solve for x
    x = 5,551,709,736.79/83,817.32
  6. Step 6: Final answer
    x = 66,235.83

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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.