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Finding the Fourth Proportional to 112,751.75, 155,591.85 and 61,764.69

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Solution

The fourth proportional to 112,751.75, 155,591.85 and 61,764.69 is: 85,232.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,751.75 : 155,591.85 = 61,764.69 : x
  2. Step 2: Convert to fraction form
    112,751.75/155,591.85 = 61,764.69/x
  3. Step 3: Cross multiply
    112,751.75x = 155,591.85 × 61,764.69
  4. Step 4: Simplify right side
    112,751.75x = 9,610,083,196.86
  5. Step 5: Solve for x
    x = 9,610,083,196.86/112,751.75
  6. Step 6: Final answer
    x = 85,232.23

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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.