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Finding the Fourth Proportional to 30,964,339.80, 46,446,509.70 and 20,760,672.60

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Solution

The fourth proportional to 30,964,339.80, 46,446,509.70 and 20,760,672.60 is: 31,141,008.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,964,339.80 : 46,446,509.70 = 20,760,672.60 : x
  2. Step 2: Convert to fraction form
    30,964,339.80/46,446,509.70 = 20,760,672.60/x
  3. Step 3: Cross multiply
    30,964,339.80x = 46,446,509.70 × 20,760,672.60
  4. Step 4: Simplify right side
    30,964,339.80x = 964,260,781,294,424.38
  5. Step 5: Solve for x
    x = 964,260,781,294,424.38/30,964,339.80
  6. Step 6: Final answer
    x = 31,141,008.90

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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.