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Finding the Fourth Proportional to 117,409.93, 162,021.33 and 63,693.81

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Solution

The fourth proportional to 117,409.93, 162,021.33 and 63,693.81 is: 87,895.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,409.93 : 162,021.33 = 63,693.81 : x
  2. Step 2: Convert to fraction form
    117,409.93/162,021.33 = 63,693.81/x
  3. Step 3: Cross multiply
    117,409.93x = 162,021.33 × 63,693.81
  4. Step 4: Simplify right side
    117,409.93x = 10,319,755,808.97
  5. Step 5: Solve for x
    x = 10,319,755,808.97/117,409.93
  6. Step 6: Final answer
    x = 87,895.09

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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.