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Finding the Fourth Proportional to 76,639.74, 105,760.88 and 44,369.88

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Solution

The fourth proportional to 76,639.74, 105,760.88 and 44,369.88 is: 61,229.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,639.74 : 105,760.88 = 44,369.88 : x
  2. Step 2: Convert to fraction form
    76,639.74/105,760.88 = 44,369.88/x
  3. Step 3: Cross multiply
    76,639.74x = 105,760.88 × 44,369.88
  4. Step 4: Simplify right side
    76,639.74x = 4,692,597,554.29
  5. Step 5: Solve for x
    x = 4,692,597,554.29/76,639.74
  6. Step 6: Final answer
    x = 61,229.30

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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.