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Finding the Fourth Proportional to 78,996.55, 109,016.54 and 47,168.23

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Solution

The fourth proportional to 78,996.55, 109,016.54 and 47,168.23 is: 65,092.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,996.55 : 109,016.54 = 47,168.23 : x
  2. Step 2: Convert to fraction form
    78,996.55/109,016.54 = 47,168.23/x
  3. Step 3: Cross multiply
    78,996.55x = 109,016.54 × 47,168.23
  4. Step 4: Simplify right side
    78,996.55x = 5,142,116,996.68
  5. Step 5: Solve for x
    x = 5,142,116,996.68/78,996.55
  6. Step 6: Final answer
    x = 65,092.93

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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.