Home / 78,439.72-108,256.26-44,905

Finding the Fourth Proportional to 78,439.72, 108,256.26 and 44,905

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Solution

The fourth proportional to 78,439.72, 108,256.26 and 44,905 is: 61,974.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,439.72 : 108,256.26 = 44,905 : x
  2. Step 2: Convert to fraction form
    78,439.72/108,256.26 = 44,905/x
  3. Step 3: Cross multiply
    78,439.72x = 108,256.26 × 44,905
  4. Step 4: Simplify right side
    78,439.72x = 4,861,247,355.30
  5. Step 5: Solve for x
    x = 4,861,247,355.30/78,439.72
  6. Step 6: Final answer
    x = 61,974.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.