Home / 68,730.12-102,920.17-45,285.48

Finding the Fourth Proportional to 68,730.12, 102,920.17 and 45,285.48

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Solution

The fourth proportional to 68,730.12, 102,920.17 and 45,285.48 is: 67,812.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,730.12 : 102,920.17 = 45,285.48 : x
  2. Step 2: Convert to fraction form
    68,730.12/102,920.17 = 45,285.48/x
  3. Step 3: Cross multiply
    68,730.12x = 102,920.17 × 45,285.48
  4. Step 4: Simplify right side
    68,730.12x = 4,660,789,300.13
  5. Step 5: Solve for x
    x = 4,660,789,300.13/68,730.12
  6. Step 6: Final answer
    x = 67,812.91

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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.