Home / 76,902.98-115,146.02-39,889.22

Finding the Fourth Proportional to 76,902.98, 115,146.02 and 39,889.22

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Solution

The fourth proportional to 76,902.98, 115,146.02 and 39,889.22 is: 59,725.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,902.98 : 115,146.02 = 39,889.22 : x
  2. Step 2: Convert to fraction form
    76,902.98/115,146.02 = 39,889.22/x
  3. Step 3: Cross multiply
    76,902.98x = 115,146.02 × 39,889.22
  4. Step 4: Simplify right side
    76,902.98x = 4,593,084,148.73
  5. Step 5: Solve for x
    x = 4,593,084,148.73/76,902.98
  6. Step 6: Final answer
    x = 59,725.70

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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.