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Finding the Fourth Proportional to 71,783.25, 99,059.88 and 39,952.15

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Solution

The fourth proportional to 71,783.25, 99,059.88 and 39,952.15 is: 55,133.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,783.25 : 99,059.88 = 39,952.15 : x
  2. Step 2: Convert to fraction form
    71,783.25/99,059.88 = 39,952.15/x
  3. Step 3: Cross multiply
    71,783.25x = 99,059.88 × 39,952.15
  4. Step 4: Simplify right side
    71,783.25x = 3,957,655,184.74
  5. Step 5: Solve for x
    x = 3,957,655,184.74/71,783.25
  6. Step 6: Final answer
    x = 55,133.41

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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.