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Finding the Fourth Proportional to 91,435.68, 125,900.87 and 80,041.41

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Solution

The fourth proportional to 91,435.68, 125,900.87 and 80,041.41 is: 110,211.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,435.68 : 125,900.87 = 80,041.41 : x
  2. Step 2: Convert to fraction form
    91,435.68/125,900.87 = 80,041.41/x
  3. Step 3: Cross multiply
    91,435.68x = 125,900.87 × 80,041.41
  4. Step 4: Simplify right side
    91,435.68x = 10,077,282,754.82
  5. Step 5: Solve for x
    x = 10,077,282,754.82/91,435.68
  6. Step 6: Final answer
    x = 110,211.71

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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.