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Finding the Fourth Proportional to 80,568.61, 111,135.41 and 47,840.84

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Solution

The fourth proportional to 80,568.61, 111,135.41 and 47,840.84 is: 65,991.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,568.61 : 111,135.41 = 47,840.84 : x
  2. Step 2: Convert to fraction form
    80,568.61/111,135.41 = 47,840.84/x
  3. Step 3: Cross multiply
    80,568.61x = 111,135.41 × 47,840.84
  4. Step 4: Simplify right side
    80,568.61x = 5,316,811,438.53
  5. Step 5: Solve for x
    x = 5,316,811,438.53/80,568.61
  6. Step 6: Final answer
    x = 65,991.11

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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.