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Finding the Fourth Proportional to 111,045.60, 166,568.40 and 40,915.80

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Solution

The fourth proportional to 111,045.60, 166,568.40 and 40,915.80 is: 61,373.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,045.60 : 166,568.40 = 40,915.80 : x
  2. Step 2: Convert to fraction form
    111,045.60/166,568.40 = 40,915.80/x
  3. Step 3: Cross multiply
    111,045.60x = 166,568.40 × 40,915.80
  4. Step 4: Simplify right side
    111,045.60x = 6,815,279,340.72
  5. Step 5: Solve for x
    x = 6,815,279,340.72/111,045.60
  6. Step 6: Final answer
    x = 61,373.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.