Home / 76,360.12-105,382.76-42,375.05

Finding the Fourth Proportional to 76,360.12, 105,382.76 and 42,375.05

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Solution

The fourth proportional to 76,360.12, 105,382.76 and 42,375.05 is: 58,480.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,360.12 : 105,382.76 = 42,375.05 : x
  2. Step 2: Convert to fraction form
    76,360.12/105,382.76 = 42,375.05/x
  3. Step 3: Cross multiply
    76,360.12x = 105,382.76 × 42,375.05
  4. Step 4: Simplify right side
    76,360.12x = 4,465,599,380.53
  5. Step 5: Solve for x
    x = 4,465,599,380.53/76,360.12
  6. Step 6: Final answer
    x = 58,480.78

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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.