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Finding the Fourth Proportional to 76,228.81, 105,203.54 and 43,964.69

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Solution

The fourth proportional to 76,228.81, 105,203.54 and 43,964.69 is: 60,675.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,228.81 : 105,203.54 = 43,964.69 : x
  2. Step 2: Convert to fraction form
    76,228.81/105,203.54 = 43,964.69/x
  3. Step 3: Cross multiply
    76,228.81x = 105,203.54 × 43,964.69
  4. Step 4: Simplify right side
    76,228.81x = 4,625,240,606.90
  5. Step 5: Solve for x
    x = 4,625,240,606.90/76,228.81
  6. Step 6: Final answer
    x = 60,675.76

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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.