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Finding the Fourth Proportional to 77,480.86, 106,915.37 and 43,493.09

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Solution

The fourth proportional to 77,480.86, 106,915.37 and 43,493.09 is: 60,015.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,480.86 : 106,915.37 = 43,493.09 : x
  2. Step 2: Convert to fraction form
    77,480.86/106,915.37 = 43,493.09/x
  3. Step 3: Cross multiply
    77,480.86x = 106,915.37 × 43,493.09
  4. Step 4: Simplify right side
    77,480.86x = 4,650,079,918.53
  5. Step 5: Solve for x
    x = 4,650,079,918.53/77,480.86
  6. Step 6: Final answer
    x = 60,015.85

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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.