Home / 76,934.10-115,192.62-39,920.34

Finding the Fourth Proportional to 76,934.10, 115,192.62 and 39,920.34

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Solution

The fourth proportional to 76,934.10, 115,192.62 and 39,920.34 is: 59,772.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,934.10 : 115,192.62 = 39,920.34 : x
  2. Step 2: Convert to fraction form
    76,934.10/115,192.62 = 39,920.34/x
  3. Step 3: Cross multiply
    76,934.10x = 115,192.62 × 39,920.34
  4. Step 4: Simplify right side
    76,934.10x = 4,598,528,555.89
  5. Step 5: Solve for x
    x = 4,598,528,555.89/76,934.10
  6. Step 6: Final answer
    x = 59,772.31

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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.