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Finding the Fourth Proportional to 66,572, 99,934.80 and 33,809.12

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Solution

The fourth proportional to 66,572, 99,934.80 and 33,809.12 is: 50,752.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,572 : 99,934.80 = 33,809.12 : x
  2. Step 2: Convert to fraction form
    66,572/99,934.80 = 33,809.12/x
  3. Step 3: Cross multiply
    66,572x = 99,934.80 × 33,809.12
  4. Step 4: Simplify right side
    66,572x = 3,378,707,645.38
  5. Step 5: Solve for x
    x = 3,378,707,645.38/66,572
  6. Step 6: Final answer
    x = 50,752.68

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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.