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Finding the Fourth Proportional to 76,624.80, 114,936.66 and 45,365.28

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Solution

The fourth proportional to 76,624.80, 114,936.66 and 45,365.28 is: 68,047.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,624.80 : 114,936.66 = 45,365.28 : x
  2. Step 2: Convert to fraction form
    76,624.80/114,936.66 = 45,365.28/x
  3. Step 3: Cross multiply
    76,624.80x = 114,936.66 × 45,365.28
  4. Step 4: Simplify right side
    76,624.80x = 5,214,133,763.16
  5. Step 5: Solve for x
    x = 5,214,133,763.16/76,624.80
  6. Step 6: Final answer
    x = 68,047.60

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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.