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Finding the Fourth Proportional to 65,903.54, 90,943.28 and 39,048.52

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Solution

The fourth proportional to 65,903.54, 90,943.28 and 39,048.52 is: 53,884.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,903.54 : 90,943.28 = 39,048.52 : x
  2. Step 2: Convert to fraction form
    65,903.54/90,943.28 = 39,048.52/x
  3. Step 3: Cross multiply
    65,903.54x = 90,943.28 × 39,048.52
  4. Step 4: Simplify right side
    65,903.54x = 3,551,200,487.95
  5. Step 5: Solve for x
    x = 3,551,200,487.95/65,903.54
  6. Step 6: Final answer
    x = 53,884.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.