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Finding the Fourth Proportional to 39,862.40, 59,793.60 and 28,052.60

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Solution

The fourth proportional to 39,862.40, 59,793.60 and 28,052.60 is: 42,078.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,862.40 : 59,793.60 = 28,052.60 : x
  2. Step 2: Convert to fraction form
    39,862.40/59,793.60 = 28,052.60/x
  3. Step 3: Cross multiply
    39,862.40x = 59,793.60 × 28,052.60
  4. Step 4: Simplify right side
    39,862.40x = 1,677,365,943.36
  5. Step 5: Solve for x
    x = 1,677,365,943.36/39,862.40
  6. Step 6: Final answer
    x = 42,078.90

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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.