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Finding the Fourth Proportional to 30,332,620.80, 45,404,452.80 and 21,829,564.80

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Solution

The fourth proportional to 30,332,620.80, 45,404,452.80 and 21,829,564.80 is: 32,676,353.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,332,620.80 : 45,404,452.80 = 21,829,564.80 : x
  2. Step 2: Convert to fraction form
    30,332,620.80/45,404,452.80 = 21,829,564.80/x
  3. Step 3: Cross multiply
    30,332,620.80x = 45,404,452.80 × 21,829,564.80
  4. Step 4: Simplify right side
    30,332,620.80x = 991,159,444,606,141.38
  5. Step 5: Solve for x
    x = 991,159,444,606,141.38/30,332,620.80
  6. Step 6: Final answer
    x = 32,676,353.66

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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.