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Finding the Fourth Proportional to 66,833.60, 100,141.02 and 40,458.40

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Solution

The fourth proportional to 66,833.60, 100,141.02 and 40,458.40 is: 60,621.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,833.60 : 100,141.02 = 40,458.40 : x
  2. Step 2: Convert to fraction form
    66,833.60/100,141.02 = 40,458.40/x
  3. Step 3: Cross multiply
    66,833.60x = 100,141.02 × 40,458.40
  4. Step 4: Simplify right side
    66,833.60x = 4,051,545,443.57
  5. Step 5: Solve for x
    x = 4,051,545,443.57/66,833.60
  6. Step 6: Final answer
    x = 60,621.39

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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.