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Finding the Fourth Proportional to 86,174.92, 118,872.83 and 51,710.74

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Solution

The fourth proportional to 86,174.92, 118,872.83 and 51,710.74 is: 71,331.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,174.92 : 118,872.83 = 51,710.74 : x
  2. Step 2: Convert to fraction form
    86,174.92/118,872.83 = 51,710.74/x
  3. Step 3: Cross multiply
    86,174.92x = 118,872.83 × 51,710.74
  4. Step 4: Simplify right side
    86,174.92x = 6,147,001,715.83
  5. Step 5: Solve for x
    x = 6,147,001,715.83/86,174.92
  6. Step 6: Final answer
    x = 71,331.68

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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.