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Finding the Fourth Proportional to 76,957.57, 115,611.54 and 55,675.95

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Solution

The fourth proportional to 76,957.57, 115,611.54 and 55,675.95 is: 83,640.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,957.57 : 115,611.54 = 55,675.95 : x
  2. Step 2: Convert to fraction form
    76,957.57/115,611.54 = 55,675.95/x
  3. Step 3: Cross multiply
    76,957.57x = 115,611.54 × 55,675.95
  4. Step 4: Simplify right side
    76,957.57x = 6,436,782,320.46
  5. Step 5: Solve for x
    x = 6,436,782,320.46/76,957.57
  6. Step 6: Final answer
    x = 83,640.66

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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.