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Finding the Fourth Proportional to 90,101, 124,339.44 and 50,357

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Solution

The fourth proportional to 90,101, 124,339.44 and 50,357 is: 69,492.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,101 : 124,339.44 = 50,357 : x
  2. Step 2: Convert to fraction form
    90,101/124,339.44 = 50,357/x
  3. Step 3: Cross multiply
    90,101x = 124,339.44 × 50,357
  4. Step 4: Simplify right side
    90,101x = 6,261,361,180.08
  5. Step 5: Solve for x
    x = 6,261,361,180.08/90,101
  6. Step 6: Final answer
    x = 69,492.69

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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.