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Finding the Fourth Proportional to 68,341,661.20, 102,512,491.80 and 32,509,853.20

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Solution

The fourth proportional to 68,341,661.20, 102,512,491.80 and 32,509,853.20 is: 48,764,779.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,341,661.20 : 102,512,491.80 = 32,509,853.20 : x
  2. Step 2: Convert to fraction form
    68,341,661.20/102,512,491.80 = 32,509,853.20/x
  3. Step 3: Cross multiply
    68,341,661.20x = 102,512,491.80 × 32,509,853.20
  4. Step 4: Simplify right side
    68,341,661.20x = 3,332,666,059,584,203.50
  5. Step 5: Solve for x
    x = 3,332,666,059,584,203.50/68,341,661.20
  6. Step 6: Final answer
    x = 48,764,779.80

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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.