Home / 78,016.20-117,051.84-38,600.52

Finding the Fourth Proportional to 78,016.20, 117,051.84 and 38,600.52

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Solution

The fourth proportional to 78,016.20, 117,051.84 and 38,600.52 is: 57,914.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,016.20 : 117,051.84 = 38,600.52 : x
  2. Step 2: Convert to fraction form
    78,016.20/117,051.84 = 38,600.52/x
  3. Step 3: Cross multiply
    78,016.20x = 117,051.84 × 38,600.52
  4. Step 4: Simplify right side
    78,016.20x = 4,518,261,890.96
  5. Step 5: Solve for x
    x = 4,518,261,890.96/78,016.20
  6. Step 6: Final answer
    x = 57,914.41

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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.