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Finding the Fourth Proportional to 39,830.40, 59,745.60 and 34,905.60

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Solution

The fourth proportional to 39,830.40, 59,745.60 and 34,905.60 is: 52,358.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,830.40 : 59,745.60 = 34,905.60 : x
  2. Step 2: Convert to fraction form
    39,830.40/59,745.60 = 34,905.60/x
  3. Step 3: Cross multiply
    39,830.40x = 59,745.60 × 34,905.60
  4. Step 4: Simplify right side
    39,830.40x = 2,085,456,015.36
  5. Step 5: Solve for x
    x = 2,085,456,015.36/39,830.40
  6. Step 6: Final answer
    x = 52,358.40

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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.