Home / 78,068.44-117,118.86-31,324.96

Finding the Fourth Proportional to 78,068.44, 117,118.86 and 31,324.96

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Solution

The fourth proportional to 78,068.44, 117,118.86 and 31,324.96 is: 46,993.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,068.44 : 117,118.86 = 31,324.96 : x
  2. Step 2: Convert to fraction form
    78,068.44/117,118.86 = 31,324.96/x
  3. Step 3: Cross multiply
    78,068.44x = 117,118.86 × 31,324.96
  4. Step 4: Simplify right side
    78,068.44x = 3,668,742,862.53
  5. Step 5: Solve for x
    x = 3,668,742,862.53/78,068.44
  6. Step 6: Final answer
    x = 46,993.93

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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.