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Finding the Fourth Proportional to 66,574, 99,937.80 and 33,811.12

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Solution

The fourth proportional to 66,574, 99,937.80 and 33,811.12 is: 50,755.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,574 : 99,937.80 = 33,811.12 : x
  2. Step 2: Convert to fraction form
    66,574/99,937.80 = 33,811.12/x
  3. Step 3: Cross multiply
    66,574x = 99,937.80 × 33,811.12
  4. Step 4: Simplify right side
    66,574x = 3,379,008,948.34
  5. Step 5: Solve for x
    x = 3,379,008,948.34/66,574
  6. Step 6: Final answer
    x = 50,755.68

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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.