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Finding the Fourth Proportional to 77,015.60, 115,465.80 and 41,994.80

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Solution

The fourth proportional to 77,015.60, 115,465.80 and 41,994.80 is: 62,960.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,015.60 : 115,465.80 = 41,994.80 : x
  2. Step 2: Convert to fraction form
    77,015.60/115,465.80 = 41,994.80/x
  3. Step 3: Cross multiply
    77,015.60x = 115,465.80 × 41,994.80
  4. Step 4: Simplify right side
    77,015.60x = 4,848,963,177.84
  5. Step 5: Solve for x
    x = 4,848,963,177.84/77,015.60
  6. Step 6: Final answer
    x = 62,960.79

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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.