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Finding the Fourth Proportional to 101,951.70, 140,688.69 and 56,632.62

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Solution

The fourth proportional to 101,951.70, 140,688.69 and 56,632.62 is: 78,150.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,951.70 : 140,688.69 = 56,632.62 : x
  2. Step 2: Convert to fraction form
    101,951.70/140,688.69 = 56,632.62/x
  3. Step 3: Cross multiply
    101,951.70x = 140,688.69 × 56,632.62
  4. Step 4: Simplify right side
    101,951.70x = 7,967,569,119.07
  5. Step 5: Solve for x
    x = 7,967,569,119.07/101,951.70
  6. Step 6: Final answer
    x = 78,150.43

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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.