Home / 78,276.38-117,434.00-22,872.38

Finding the Fourth Proportional to 78,276.38, 117,434.00 and 22,872.38

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Solution

The fourth proportional to 78,276.38, 117,434.00 and 22,872.38 is: 34,314.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,276.38 : 117,434.00 = 22,872.38 : x
  2. Step 2: Convert to fraction form
    78,276.38/117,434.00 = 22,872.38/x
  3. Step 3: Cross multiply
    78,276.38x = 117,434.00 × 22,872.38
  4. Step 4: Simplify right side
    78,276.38x = 2,685,994,542.93
  5. Step 5: Solve for x
    x = 2,685,994,542.93/78,276.38
  6. Step 6: Final answer
    x = 34,314.24

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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.