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Finding the Fourth Proportional to 30,672,128.80, 45,969,118.80 and 16,302,080.80

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Solution

The fourth proportional to 30,672,128.80, 45,969,118.80 and 16,302,080.80 is: 24,432,353.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,672,128.80 : 45,969,118.80 = 16,302,080.80 : x
  2. Step 2: Convert to fraction form
    30,672,128.80/45,969,118.80 = 16,302,080.80/x
  3. Step 3: Cross multiply
    30,672,128.80x = 45,969,118.80 × 16,302,080.80
  4. Step 4: Simplify right side
    30,672,128.80x = 749,392,288,982,399
  5. Step 5: Solve for x
    x = 749,392,288,982,399/30,672,128.80
  6. Step 6: Final answer
    x = 24,432,353.35

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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.