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Finding the Fourth Proportional to 86,124.44, 118,861.57 and 47,887.80

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Solution

The fourth proportional to 86,124.44, 118,861.57 and 47,887.80 is: 66,090.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,124.44 : 118,861.57 = 47,887.80 : x
  2. Step 2: Convert to fraction form
    86,124.44/118,861.57 = 47,887.80/x
  3. Step 3: Cross multiply
    86,124.44x = 118,861.57 × 47,887.80
  4. Step 4: Simplify right side
    86,124.44x = 5,692,019,091.85
  5. Step 5: Solve for x
    x = 5,692,019,091.85/86,124.44
  6. Step 6: Final answer
    x = 66,090.64

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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.