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Finding the Fourth Proportional to 39,447.95, 59,201.30 and 28,945.10

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Solution

The fourth proportional to 39,447.95, 59,201.30 and 28,945.10 is: 43,439.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,447.95 : 59,201.30 = 28,945.10 : x
  2. Step 2: Convert to fraction form
    39,447.95/59,201.30 = 28,945.10/x
  3. Step 3: Cross multiply
    39,447.95x = 59,201.30 × 28,945.10
  4. Step 4: Simplify right side
    39,447.95x = 1,713,587,769.00
  5. Step 5: Solve for x
    x = 1,713,587,769.00/39,447.95
  6. Step 6: Final answer
    x = 43,439.22

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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.