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Finding the Fourth Proportional to 77,037.60, 115,426.80 and 50,728.80

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Solution

The fourth proportional to 77,037.60, 115,426.80 and 50,728.80 is: 76,007.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,037.60 : 115,426.80 = 50,728.80 : x
  2. Step 2: Convert to fraction form
    77,037.60/115,426.80 = 50,728.80/x
  3. Step 3: Cross multiply
    77,037.60x = 115,426.80 × 50,728.80
  4. Step 4: Simplify right side
    77,037.60x = 5,855,463,051.84
  5. Step 5: Solve for x
    x = 5,855,463,051.84/77,037.60
  6. Step 6: Final answer
    x = 76,007.86

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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.