Home / 47,982.78-71,973.50-21,669.12

Finding the Fourth Proportional to 47,982.78, 71,973.50 and 21,669.12

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Solution

The fourth proportional to 47,982.78, 71,973.50 and 21,669.12 is: 32,503.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,982.78 : 71,973.50 = 21,669.12 : x
  2. Step 2: Convert to fraction form
    47,982.78/71,973.50 = 21,669.12/x
  3. Step 3: Cross multiply
    47,982.78x = 71,973.50 × 21,669.12
  4. Step 4: Simplify right side
    47,982.78x = 1,559,602,299.97
  5. Step 5: Solve for x
    x = 1,559,602,299.97/47,982.78
  6. Step 6: Final answer
    x = 32,503.38

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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.