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Finding the Fourth Proportional to 85,602, 118,131.18 and 47,876.25

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Solution

The fourth proportional to 85,602, 118,131.18 and 47,876.25 is: 66,069.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,602 : 118,131.18 = 47,876.25 : x
  2. Step 2: Convert to fraction form
    85,602/118,131.18 = 47,876.25/x
  3. Step 3: Cross multiply
    85,602x = 118,131.18 × 47,876.25
  4. Step 4: Simplify right side
    85,602x = 5,655,677,906.48
  5. Step 5: Solve for x
    x = 5,655,677,906.48/85,602
  6. Step 6: Final answer
    x = 66,069.46

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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.