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Finding the Fourth Proportional to 90,459, 124,832.58 and 50,172.84

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Solution

The fourth proportional to 90,459, 124,832.58 and 50,172.84 is: 69,238.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,459 : 124,832.58 = 50,172.84 : x
  2. Step 2: Convert to fraction form
    90,459/124,832.58 = 50,172.84/x
  3. Step 3: Cross multiply
    90,459x = 124,832.58 × 50,172.84
  4. Step 4: Simplify right side
    90,459x = 6,263,205,063.13
  5. Step 5: Solve for x
    x = 6,263,205,063.13/90,459
  6. Step 6: Final answer
    x = 69,238.05

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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.