Home / 76,878.53-115,317.78-23,570.65

Finding the Fourth Proportional to 76,878.53, 115,317.78 and 23,570.65

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Solution

The fourth proportional to 76,878.53, 115,317.78 and 23,570.65 is: 35,355.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,878.53 : 115,317.78 = 23,570.65 : x
  2. Step 2: Convert to fraction form
    76,878.53/115,317.78 = 23,570.65/x
  3. Step 3: Cross multiply
    76,878.53x = 115,317.78 × 23,570.65
  4. Step 4: Simplify right side
    76,878.53x = 2,718,115,031.16
  5. Step 5: Solve for x
    x = 2,718,115,031.16/76,878.53
  6. Step 6: Final answer
    x = 35,355.97

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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.