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Finding the Fourth Proportional to 77,996.39, 116,994.57 and 25,405.86

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Solution

The fourth proportional to 77,996.39, 116,994.57 and 25,405.86 is: 38,108.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,996.39 : 116,994.57 = 25,405.86 : x
  2. Step 2: Convert to fraction form
    77,996.39/116,994.57 = 25,405.86/x
  3. Step 3: Cross multiply
    77,996.39x = 116,994.57 × 25,405.86
  4. Step 4: Simplify right side
    77,996.39x = 2,972,347,666.18
  5. Step 5: Solve for x
    x = 2,972,347,666.18/77,996.39
  6. Step 6: Final answer
    x = 38,108.79

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1.5x scale

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.