Home / 77,405.36-106,755.96-51,915.92

Finding the Fourth Proportional to 77,405.36, 106,755.96 and 51,915.92

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Solution

The fourth proportional to 77,405.36, 106,755.96 and 51,915.92 is: 71,601.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,405.36 : 106,755.96 = 51,915.92 : x
  2. Step 2: Convert to fraction form
    77,405.36/106,755.96 = 51,915.92/x
  3. Step 3: Cross multiply
    77,405.36x = 106,755.96 × 51,915.92
  4. Step 4: Simplify right side
    77,405.36x = 5,542,333,878.88
  5. Step 5: Solve for x
    x = 5,542,333,878.88/77,405.36
  6. Step 6: Final answer
    x = 71,601.42

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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.