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Finding the Fourth Proportional to 78,166.56, 117,252.03 and 48,669.60

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Solution

The fourth proportional to 78,166.56, 117,252.03 and 48,669.60 is: 73,005.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,166.56 : 117,252.03 = 48,669.60 : x
  2. Step 2: Convert to fraction form
    78,166.56/117,252.03 = 48,669.60/x
  3. Step 3: Cross multiply
    78,166.56x = 117,252.03 × 48,669.60
  4. Step 4: Simplify right side
    78,166.56x = 5,706,609,399.29
  5. Step 5: Solve for x
    x = 5,706,609,399.29/78,166.56
  6. Step 6: Final answer
    x = 73,005.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.