Home / 76,839.77-106,039.49-42,850.46

Finding the Fourth Proportional to 76,839.77, 106,039.49 and 42,850.46

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Solution

The fourth proportional to 76,839.77, 106,039.49 and 42,850.46 is: 59,133.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,839.77 : 106,039.49 = 42,850.46 : x
  2. Step 2: Convert to fraction form
    76,839.77/106,039.49 = 42,850.46/x
  3. Step 3: Cross multiply
    76,839.77x = 106,039.49 × 42,850.46
  4. Step 4: Simplify right side
    76,839.77x = 4,543,840,180.22
  5. Step 5: Solve for x
    x = 4,543,840,180.22/76,839.77
  6. Step 6: Final answer
    x = 59,133.97

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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.