Home / 68,320.96-102,448.60-38,730.85

Finding the Fourth Proportional to 68,320.96, 102,448.60 and 38,730.85

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Solution

The fourth proportional to 68,320.96, 102,448.60 and 38,730.85 is: 58,077.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,320.96 : 102,448.60 = 38,730.85 : x
  2. Step 2: Convert to fraction form
    68,320.96/102,448.60 = 38,730.85/x
  3. Step 3: Cross multiply
    68,320.96x = 102,448.60 × 38,730.85
  4. Step 4: Simplify right side
    68,320.96x = 3,967,921,165.66
  5. Step 5: Solve for x
    x = 3,967,921,165.66/68,320.96
  6. Step 6: Final answer
    x = 58,077.66

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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.