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Finding the Fourth Proportional to 76,012.48, 113,919.36 and 40,876.48

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Solution

The fourth proportional to 76,012.48, 113,919.36 and 40,876.48 is: 61,261.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,012.48 : 113,919.36 = 40,876.48 : x
  2. Step 2: Convert to fraction form
    76,012.48/113,919.36 = 40,876.48/x
  3. Step 3: Cross multiply
    76,012.48x = 113,919.36 × 40,876.48
  4. Step 4: Simplify right side
    76,012.48x = 4,656,622,440.65
  5. Step 5: Solve for x
    x = 4,656,622,440.65/76,012.48
  6. Step 6: Final answer
    x = 61,261.29

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1.5x scale

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.