Home / 47,415.78-71,142.80-21,102.53

Finding the Fourth Proportional to 47,415.78, 71,142.80 and 21,102.53

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Solution

The fourth proportional to 47,415.78, 71,142.80 and 21,102.53 is: 31,662.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,415.78 : 71,142.80 = 21,102.53 : x
  2. Step 2: Convert to fraction form
    47,415.78/71,142.80 = 21,102.53/x
  3. Step 3: Cross multiply
    47,415.78x = 71,142.80 × 21,102.53
  4. Step 4: Simplify right side
    47,415.78x = 1,501,292,610.06
  5. Step 5: Solve for x
    x = 1,501,292,610.06/47,415.78
  6. Step 6: Final answer
    x = 31,662.30

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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.