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Finding the Fourth Proportional to 76,712.78, 114,937.14 and 59,879.36

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Solution

The fourth proportional to 76,712.78, 114,937.14 and 59,879.36 is: 89,715.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,712.78 : 114,937.14 = 59,879.36 : x
  2. Step 2: Convert to fraction form
    76,712.78/114,937.14 = 59,879.36/x
  3. Step 3: Cross multiply
    76,712.78x = 114,937.14 × 59,879.36
  4. Step 4: Simplify right side
    76,712.78x = 6,882,362,383.43
  5. Step 5: Solve for x
    x = 6,882,362,383.43/76,712.78
  6. Step 6: Final answer
    x = 89,715.98

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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.