Home / 90,111.68-124,351.05-51,865.92

Finding the Fourth Proportional to 90,111.68, 124,351.05 and 51,865.92

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Solution

The fourth proportional to 90,111.68, 124,351.05 and 51,865.92 is: 71,573.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,111.68 : 124,351.05 = 51,865.92 : x
  2. Step 2: Convert to fraction form
    90,111.68/124,351.05 = 51,865.92/x
  3. Step 3: Cross multiply
    90,111.68x = 124,351.05 × 51,865.92
  4. Step 4: Simplify right side
    90,111.68x = 6,449,581,611.22
  5. Step 5: Solve for x
    x = 6,449,581,611.22/90,111.68
  6. Step 6: Final answer
    x = 71,573.21

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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.