Home / 77,628.36-107,125.66-48,942.20

Finding the Fourth Proportional to 77,628.36, 107,125.66 and 48,942.20

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Solution

The fourth proportional to 77,628.36, 107,125.66 and 48,942.20 is: 67,539.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,628.36 : 107,125.66 = 48,942.20 : x
  2. Step 2: Convert to fraction form
    77,628.36/107,125.66 = 48,942.20/x
  3. Step 3: Cross multiply
    77,628.36x = 107,125.66 × 48,942.20
  4. Step 4: Simplify right side
    77,628.36x = 5,242,965,476.85
  5. Step 5: Solve for x
    x = 5,242,965,476.85/77,628.36
  6. Step 6: Final answer
    x = 67,539.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.