Home / 90,123.09-124,367.64-49,835.79

Finding the Fourth Proportional to 90,123.09, 124,367.64 and 49,835.79

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Solution

The fourth proportional to 90,123.09, 124,367.64 and 49,835.79 is: 68,772.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,123.09 : 124,367.64 = 49,835.79 : x
  2. Step 2: Convert to fraction form
    90,123.09/124,367.64 = 49,835.79/x
  3. Step 3: Cross multiply
    90,123.09x = 124,367.64 × 49,835.79
  4. Step 4: Simplify right side
    90,123.09x = 6,197,959,589.84
  5. Step 5: Solve for x
    x = 6,197,959,589.84/90,123.09
  6. Step 6: Final answer
    x = 68,772.16

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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.