Home / 78,514.16-117,705.02-34,107.75

Finding the Fourth Proportional to 78,514.16, 117,705.02 and 34,107.75

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Solution

The fourth proportional to 78,514.16, 117,705.02 and 34,107.75 is: 51,132.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,514.16 : 117,705.02 = 34,107.75 : x
  2. Step 2: Convert to fraction form
    78,514.16/117,705.02 = 34,107.75/x
  3. Step 3: Cross multiply
    78,514.16x = 117,705.02 × 34,107.75
  4. Step 4: Simplify right side
    78,514.16x = 4,014,653,225.37
  5. Step 5: Solve for x
    x = 4,014,653,225.37/78,514.16
  6. Step 6: Final answer
    x = 51,132.86

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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.