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Finding the Fourth Proportional to 76,499.64, 105,576.17 and 44,678.79

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Solution

The fourth proportional to 76,499.64, 105,576.17 and 44,678.79 is: 61,660.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,499.64 : 105,576.17 = 44,678.79 : x
  2. Step 2: Convert to fraction form
    76,499.64/105,576.17 = 44,678.79/x
  3. Step 3: Cross multiply
    76,499.64x = 105,576.17 × 44,678.79
  4. Step 4: Simplify right side
    76,499.64x = 4,717,015,305.04
  5. Step 5: Solve for x
    x = 4,717,015,305.04/76,499.64
  6. Step 6: Final answer
    x = 61,660.62

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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.