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Finding the Fourth Proportional to 85,953.70, 128,821.20 and 41,484.70

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Solution

The fourth proportional to 85,953.70, 128,821.20 and 41,484.70 is: 62,174.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,953.70 : 128,821.20 = 41,484.70 : x
  2. Step 2: Convert to fraction form
    85,953.70/128,821.20 = 41,484.70/x
  3. Step 3: Cross multiply
    85,953.70x = 128,821.20 × 41,484.70
  4. Step 4: Simplify right side
    85,953.70x = 5,344,108,835.64
  5. Step 5: Solve for x
    x = 5,344,108,835.64/85,953.70
  6. Step 6: Final answer
    x = 62,174.27

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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.