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Finding the Fourth Proportional to 76,695.66, 114,898.68 and 39,279.42

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Solution

The fourth proportional to 76,695.66, 114,898.68 and 39,279.42 is: 58,844.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,695.66 : 114,898.68 = 39,279.42 : x
  2. Step 2: Convert to fraction form
    76,695.66/114,898.68 = 39,279.42/x
  3. Step 3: Cross multiply
    76,695.66x = 114,898.68 × 39,279.42
  4. Step 4: Simplify right side
    76,695.66x = 4,513,153,509.17
  5. Step 5: Solve for x
    x = 4,513,153,509.17/76,695.66
  6. Step 6: Final answer
    x = 58,844.97

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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.