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Finding the Fourth Proportional to 90,223.47, 124,508.64 and 49,940.01

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Solution

The fourth proportional to 90,223.47, 124,508.64 and 49,940.01 is: 68,917.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,223.47 : 124,508.64 = 49,940.01 : x
  2. Step 2: Convert to fraction form
    90,223.47/124,508.64 = 49,940.01/x
  3. Step 3: Cross multiply
    90,223.47x = 124,508.64 × 49,940.01
  4. Step 4: Simplify right side
    90,223.47x = 6,217,962,726.69
  5. Step 5: Solve for x
    x = 6,217,962,726.69/90,223.47
  6. Step 6: Final answer
    x = 68,917.35

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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.