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Finding the Fourth Proportional to 90,099, 124,336.68 and 50,355

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Solution

The fourth proportional to 90,099, 124,336.68 and 50,355 is: 69,489.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,099 : 124,336.68 = 50,355 : x
  2. Step 2: Convert to fraction form
    90,099/124,336.68 = 50,355/x
  3. Step 3: Cross multiply
    90,099x = 124,336.68 × 50,355
  4. Step 4: Simplify right side
    90,099x = 6,260,973,521.40
  5. Step 5: Solve for x
    x = 6,260,973,521.40/90,099
  6. Step 6: Final answer
    x = 69,489.93

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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.