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Finding the Fourth Proportional to 112,045, 154,622.10 and 61,744

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Solution

The fourth proportional to 112,045, 154,622.10 and 61,744 is: 85,206.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,045 : 154,622.10 = 61,744 : x
  2. Step 2: Convert to fraction form
    112,045/154,622.10 = 61,744/x
  3. Step 3: Cross multiply
    112,045x = 154,622.10 × 61,744
  4. Step 4: Simplify right side
    112,045x = 9,546,986,942.40
  5. Step 5: Solve for x
    x = 9,546,986,942.40/112,045
  6. Step 6: Final answer
    x = 85,206.72

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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.