Home / 76,195.20-105,149.28-42,661.44

Finding the Fourth Proportional to 76,195.20, 105,149.28 and 42,661.44

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Solution

The fourth proportional to 76,195.20, 105,149.28 and 42,661.44 is: 58,872.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,195.20 : 105,149.28 = 42,661.44 : x
  2. Step 2: Convert to fraction form
    76,195.20/105,149.28 = 42,661.44/x
  3. Step 3: Cross multiply
    76,195.20x = 105,149.28 × 42,661.44
  4. Step 4: Simplify right side
    76,195.20x = 4,485,819,699.76
  5. Step 5: Solve for x
    x = 4,485,819,699.76/76,195.20
  6. Step 6: Final answer
    x = 58,872.73

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1.5x scale

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.