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Finding the Fourth Proportional to 73,529.80, 110,208.30 and 31,409.80

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Solution

The fourth proportional to 73,529.80, 110,208.30 and 31,409.80 is: 47,077.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,529.80 : 110,208.30 = 31,409.80 : x
  2. Step 2: Convert to fraction form
    73,529.80/110,208.30 = 31,409.80/x
  3. Step 3: Cross multiply
    73,529.80x = 110,208.30 × 31,409.80
  4. Step 4: Simplify right side
    73,529.80x = 3,461,620,661.34
  5. Step 5: Solve for x
    x = 3,461,620,661.34/73,529.80
  6. Step 6: Final answer
    x = 47,077.79

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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.