Home / 68,439.12-102,678.12-48,260.40

Finding the Fourth Proportional to 68,439.12, 102,678.12 and 48,260.40

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Solution

The fourth proportional to 68,439.12, 102,678.12 and 48,260.40 is: 72,404.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,439.12 : 102,678.12 = 48,260.40 : x
  2. Step 2: Convert to fraction form
    68,439.12/102,678.12 = 48,260.40/x
  3. Step 3: Cross multiply
    68,439.12x = 102,678.12 × 48,260.40
  4. Step 4: Simplify right side
    68,439.12x = 4,955,287,142.45
  5. Step 5: Solve for x
    x = 4,955,287,142.45/68,439.12
  6. Step 6: Final answer
    x = 72,404.31

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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.