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Finding the Fourth Proportional to 112,050, 154,629 and 61,749

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Solution

The fourth proportional to 112,050, 154,629 and 61,749 is: 85,213.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,050 : 154,629 = 61,749 : x
  2. Step 2: Convert to fraction form
    112,050/154,629 = 61,749/x
  3. Step 3: Cross multiply
    112,050x = 154,629 × 61,749
  4. Step 4: Simplify right side
    112,050x = 9,548,186,121
  5. Step 5: Solve for x
    x = 9,548,186,121/112,050
  6. Step 6: Final answer
    x = 85,213.62

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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.