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Finding the Fourth Proportional to 101,981.92, 152,999.88 and 35,421.88

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Solution

The fourth proportional to 101,981.92, 152,999.88 and 35,421.88 is: 53,142.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,981.92 : 152,999.88 = 35,421.88 : x
  2. Step 2: Convert to fraction form
    101,981.92/152,999.88 = 35,421.88/x
  3. Step 3: Cross multiply
    101,981.92x = 152,999.88 × 35,421.88
  4. Step 4: Simplify right side
    101,981.92x = 5,419,543,389.37
  5. Step 5: Solve for x
    x = 5,419,543,389.37/101,981.92
  6. Step 6: Final answer
    x = 53,142.20

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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.