Home / 76,359.12-105,375.44-42,372.78

Finding the Fourth Proportional to 76,359.12, 105,375.44 and 42,372.78

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Solution

The fourth proportional to 76,359.12, 105,375.44 and 42,372.78 is: 58,474.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,359.12 : 105,375.44 = 42,372.78 : x
  2. Step 2: Convert to fraction form
    76,359.12/105,375.44 = 42,372.78/x
  3. Step 3: Cross multiply
    76,359.12x = 105,375.44 × 42,372.78
  4. Step 4: Simplify right side
    76,359.12x = 4,465,050,336.52
  5. Step 5: Solve for x
    x = 4,465,050,336.52/76,359.12
  6. Step 6: Final answer
    x = 58,474.36

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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.