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Finding the Fourth Proportional to 68,289,700.80, 102,509,200.80 and 42,759,537.60

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Solution

The fourth proportional to 68,289,700.80, 102,509,200.80 and 42,759,537.60 is: 64,186,048.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,289,700.80 : 102,509,200.80 = 42,759,537.60 : x
  2. Step 2: Convert to fraction form
    68,289,700.80/102,509,200.80 = 42,759,537.60/x
  3. Step 3: Cross multiply
    68,289,700.80x = 102,509,200.80 × 42,759,537.60
  4. Step 4: Simplify right side
    68,289,700.80x = 4,383,246,025,953,550
  5. Step 5: Solve for x
    x = 4,383,246,025,953,550/68,289,700.80
  6. Step 6: Final answer
    x = 64,186,048.18

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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.