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Finding the Fourth Proportional to 60,800.34, 91,156.83 and 28,761.65

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Solution

The fourth proportional to 60,800.34, 91,156.83 and 28,761.65 is: 43,121.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,800.34 : 91,156.83 = 28,761.65 : x
  2. Step 2: Convert to fraction form
    60,800.34/91,156.83 = 28,761.65/x
  3. Step 3: Cross multiply
    60,800.34x = 91,156.83 × 28,761.65
  4. Step 4: Simplify right side
    60,800.34x = 2,621,820,617.77
  5. Step 5: Solve for x
    x = 2,621,820,617.77/60,800.34
  6. Step 6: Final answer
    x = 43,121.81

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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.