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Finding the Fourth Proportional to 77,949.52, 116,126.87 and 74,187.88

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Solution

The fourth proportional to 77,949.52, 116,126.87 and 74,187.88 is: 110,522.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,949.52 : 116,126.87 = 74,187.88 : x
  2. Step 2: Convert to fraction form
    77,949.52/116,126.87 = 74,187.88/x
  3. Step 3: Cross multiply
    77,949.52x = 116,126.87 × 74,187.88
  4. Step 4: Simplify right side
    77,949.52x = 8,615,206,296.34
  5. Step 5: Solve for x
    x = 8,615,206,296.34/77,949.52
  6. Step 6: Final answer
    x = 110,522.89

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.