Home / 78,114.36-117,176.96-31,367.24

Finding the Fourth Proportional to 78,114.36, 117,176.96 and 31,367.24

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Solution

The fourth proportional to 78,114.36, 117,176.96 and 31,367.24 is: 47,053.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,114.36 : 117,176.96 = 31,367.24 : x
  2. Step 2: Convert to fraction form
    78,114.36/117,176.96 = 31,367.24/x
  3. Step 3: Cross multiply
    78,114.36x = 117,176.96 × 31,367.24
  4. Step 4: Simplify right side
    78,114.36x = 3,675,517,826.79
  5. Step 5: Solve for x
    x = 3,675,517,826.79/78,114.36
  6. Step 6: Final answer
    x = 47,053.04

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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.