Home / 78,738.36-108,654.66-45,204.36

Finding the Fourth Proportional to 78,738.36, 108,654.66 and 45,204.36

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Solution

The fourth proportional to 78,738.36, 108,654.66 and 45,204.36 is: 62,379.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,738.36 : 108,654.66 = 45,204.36 : x
  2. Step 2: Convert to fraction form
    78,738.36/108,654.66 = 45,204.36/x
  3. Step 3: Cross multiply
    78,738.36x = 108,654.66 × 45,204.36
  4. Step 4: Simplify right side
    78,738.36x = 4,911,664,366.32
  5. Step 5: Solve for x
    x = 4,911,664,366.32/78,738.36
  6. Step 6: Final answer
    x = 62,379.56

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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.