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Finding the Fourth Proportional to 41,368.40, 61,906.80 and 28,829.60

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Solution

The fourth proportional to 41,368.40, 61,906.80 and 28,829.60 is: 43,142.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,368.40 : 61,906.80 = 28,829.60 : x
  2. Step 2: Convert to fraction form
    41,368.40/61,906.80 = 28,829.60/x
  3. Step 3: Cross multiply
    41,368.40x = 61,906.80 × 28,829.60
  4. Step 4: Simplify right side
    41,368.40x = 1,784,748,281.28
  5. Step 5: Solve for x
    x = 1,784,748,281.28/41,368.40
  6. Step 6: Final answer
    x = 43,142.79

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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.