Home / 68,474,144.49-102,468,760.90-42,578,640.20

Finding the Fourth Proportional to 68,474,144.49, 102,468,760.90 and 42,578,640.20

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Solution

The fourth proportional to 68,474,144.49, 102,468,760.90 and 42,578,640.20 is: 63,717,196.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,474,144.49 : 102,468,760.90 = 42,578,640.20 : x
  2. Step 2: Convert to fraction form
    68,474,144.49/102,468,760.90 = 42,578,640.20/x
  3. Step 3: Cross multiply
    68,474,144.49x = 102,468,760.90 × 42,578,640.20
  4. Step 4: Simplify right side
    68,474,144.49x = 4,362,980,502,250,653.50
  5. Step 5: Solve for x
    x = 4,362,980,502,250,653.50/68,474,144.49
  6. Step 6: Final answer
    x = 63,717,196.25

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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.