Home / 78,733.72-108,662.34-45,199

Finding the Fourth Proportional to 78,733.72, 108,662.34 and 45,199

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Solution

The fourth proportional to 78,733.72, 108,662.34 and 45,199 is: 62,380.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,733.72 : 108,662.34 = 45,199 : x
  2. Step 2: Convert to fraction form
    78,733.72/108,662.34 = 45,199/x
  3. Step 3: Cross multiply
    78,733.72x = 108,662.34 × 45,199
  4. Step 4: Simplify right side
    78,733.72x = 4,911,429,105.66
  5. Step 5: Solve for x
    x = 4,911,429,105.66/78,733.72
  6. Step 6: Final answer
    x = 62,380.25

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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.