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Finding the Fourth Proportional to 76,558.48, 114,822.66 and 72,760.90

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Solution

The fourth proportional to 76,558.48, 114,822.66 and 72,760.90 is: 109,127.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,558.48 : 114,822.66 = 72,760.90 : x
  2. Step 2: Convert to fraction form
    76,558.48/114,822.66 = 72,760.90/x
  3. Step 3: Cross multiply
    76,558.48x = 114,822.66 × 72,760.90
  4. Step 4: Simplify right side
    76,558.48x = 8,354,600,081.99
  5. Step 5: Solve for x
    x = 8,354,600,081.99/76,558.48
  6. Step 6: Final answer
    x = 109,127.04

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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.