Home / 90,405.11-124,772.00-50,127.86

Finding the Fourth Proportional to 90,405.11, 124,772.00 and 50,127.86

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Solution

The fourth proportional to 90,405.11, 124,772.00 and 50,127.86 is: 69,183.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,405.11 : 124,772.00 = 50,127.86 : x
  2. Step 2: Convert to fraction form
    90,405.11/124,772.00 = 50,127.86/x
  3. Step 3: Cross multiply
    90,405.11x = 124,772.00 × 50,127.86
  4. Step 4: Simplify right side
    90,405.11x = 6,254,553,409.21
  5. Step 5: Solve for x
    x = 6,254,553,409.21/90,405.11
  6. Step 6: Final answer
    x = 69,183.63

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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.