Home / 68,320.70-102,448.22-38,730.60

Finding the Fourth Proportional to 68,320.70, 102,448.22 and 38,730.60

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Solution

The fourth proportional to 68,320.70, 102,448.22 and 38,730.60 is: 58,077.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,320.70 : 102,448.22 = 38,730.60 : x
  2. Step 2: Convert to fraction form
    68,320.70/102,448.22 = 38,730.60/x
  3. Step 3: Cross multiply
    68,320.70x = 102,448.22 × 38,730.60
  4. Step 4: Simplify right side
    68,320.70x = 3,967,881,029.53
  5. Step 5: Solve for x
    x = 3,967,881,029.53/68,320.70
  6. Step 6: Final answer
    x = 58,077.29

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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.