Home / 78,171.24-107,876.70-45,927.57

Finding the Fourth Proportional to 78,171.24, 107,876.70 and 45,927.57

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Solution

The fourth proportional to 78,171.24, 107,876.70 and 45,927.57 is: 63,380.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,171.24 : 107,876.70 = 45,927.57 : x
  2. Step 2: Convert to fraction form
    78,171.24/107,876.70 = 45,927.57/x
  3. Step 3: Cross multiply
    78,171.24x = 107,876.70 × 45,927.57
  4. Step 4: Simplify right side
    78,171.24x = 4,954,514,690.62
  5. Step 5: Solve for x
    x = 4,954,514,690.62/78,171.24
  6. Step 6: Final answer
    x = 63,380.28

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1.5x scale

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.