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Finding the Fourth Proportional to 104,382.72, 156,600 and 30,510.72

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Solution

The fourth proportional to 104,382.72, 156,600 and 30,510.72 is: 45,773.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,382.72 : 156,600 = 30,510.72 : x
  2. Step 2: Convert to fraction form
    104,382.72/156,600 = 30,510.72/x
  3. Step 3: Cross multiply
    104,382.72x = 156,600 × 30,510.72
  4. Step 4: Simplify right side
    104,382.72x = 4,777,978,752
  5. Step 5: Solve for x
    x = 4,777,978,752/104,382.72
  6. Step 6: Final answer
    x = 45,773.66

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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.