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Finding the Fourth Proportional to 86,152.14, 118,890.03 and 47,910.86

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Solution

The fourth proportional to 86,152.14, 118,890.03 and 47,910.86 is: 66,117.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,152.14 : 118,890.03 = 47,910.86 : x
  2. Step 2: Convert to fraction form
    86,152.14/118,890.03 = 47,910.86/x
  3. Step 3: Cross multiply
    86,152.14x = 118,890.03 × 47,910.86
  4. Step 4: Simplify right side
    86,152.14x = 5,696,123,582.73
  5. Step 5: Solve for x
    x = 5,696,123,582.73/86,152.14
  6. Step 6: Final answer
    x = 66,117.03

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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.