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Finding the Fourth Proportional to 86,169.77, 118,912.58 and 47,928.50

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Solution

The fourth proportional to 86,169.77, 118,912.58 and 47,928.50 is: 66,140.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,169.77 : 118,912.58 = 47,928.50 : x
  2. Step 2: Convert to fraction form
    86,169.77/118,912.58 = 47,928.50/x
  3. Step 3: Cross multiply
    86,169.77x = 118,912.58 × 47,928.50
  4. Step 4: Simplify right side
    86,169.77x = 5,699,302,007.63
  5. Step 5: Solve for x
    x = 5,699,302,007.63/86,169.77
  6. Step 6: Final answer
    x = 66,140.39

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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.