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Finding the Fourth Proportional to 85,887.50, 118,511.79 and 49,091.04

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Solution

The fourth proportional to 85,887.50, 118,511.79 and 49,091.04 is: 67,738.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,887.50 : 118,511.79 = 49,091.04 : x
  2. Step 2: Convert to fraction form
    85,887.50/118,511.79 = 49,091.04/x
  3. Step 3: Cross multiply
    85,887.50x = 118,511.79 × 49,091.04
  4. Step 4: Simplify right side
    85,887.50x = 5,817,867,023.36
  5. Step 5: Solve for x
    x = 5,817,867,023.36/85,887.50
  6. Step 6: Final answer
    x = 67,738.23

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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.