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Finding the Fourth Proportional to 76,952.70, 115,429.05 and 66,584.70

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Solution

The fourth proportional to 76,952.70, 115,429.05 and 66,584.70 is: 99,877.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,952.70 : 115,429.05 = 66,584.70 : x
  2. Step 2: Convert to fraction form
    76,952.70/115,429.05 = 66,584.70/x
  3. Step 3: Cross multiply
    76,952.70x = 115,429.05 × 66,584.70
  4. Step 4: Simplify right side
    76,952.70x = 7,685,808,665.54
  5. Step 5: Solve for x
    x = 7,685,808,665.54/76,952.70
  6. Step 6: Final answer
    x = 99,877.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.